Can I use CRONBACH’S ALPHA in testing the reliability of the device? How?
Q: 1. A community-based intervention program for hypertension was undertaken in two communities to…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
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A: The independent variable is size of the home and the dependent variable is price.
Q: 3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain,…
A: Given Information: Consider the given data: 1 3 69 1.838849 2 4 45 1.653213 3 6 49 1.690196…
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A: Option B is the correct answer
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Q: 5. The manager of a rent-a-car business want to know whether the true average numbers of cars rented…
A: Solution-: Given: μ0=25,σ=6.9,x¯=22.8,n=36,α=0.05 We want to find, (a) Type of test: (b) Z…
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Q: True or false 1. A negative odds ratio is an indication that exposure decreases the odds of disease.
A: Given that True or false.. 1. A negative odds ratio is an indication that exposure decreases the…
Q: 35 43 52 39 62 54 58 37 44 62 43 48 53 42 55 37 45 50 40 46 52 53 49 37 44 54 49 61 59 60 45 58 32…
A: Given information: Variable of interest= WeightNo. of observations= 40
Q: Convert to degrees. 9.
A: Answer is 140 degree.
Q: 78 is what percent of 120?
A: The objective is to find 78 is what percent of 120
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A: Given, X is a random variable representing the type of contract It anticipates a profit of $50,000…
Q: 3. The data in Table 3.1 are from an investigation of an outbreak persistent vomiting, and…
A: Age BLL Log BLL 1 3 69 1.838849 2 4 45 1.653213 3 6 49 1.690196 4 7 84 1.924279 5 9 48…
Q: Ukraine-1996 Ukraine-2019 First 20% of population 3.70% of income held 10% of income held First 40%…
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Q: Marketing campaign A is tested in one of six regions and marketing campaign B is tested in another…
A: Option B is correct. A is an inferior campaign method due to the p-value.
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A:
Q: A geography test was given to a simple random sample of 500 high-school students in a certain large…
A: Given information: A geography test was given to a simple random sample of 500 high-school students…
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Q: 4. Calculate the standard deviation. 5. Select and draw the most appropriate method (graph/chart) in…
A: Given the data as ID Age BLL Log10BLL 1 3 69 1.84 2 4 45 1.66 3 6 49 1.69 4 7 84 1.92 5…
Q: What is the probability that when a coin is flipped eight times in a row, it lands heads up every…
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A: To find the percentage between 25 and 40, find the area of the graph between 25 and 40. This gives…
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Q: 3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain,…
A: Given Information: Consider the given data: ID Age BLL Log BLL 1 3 69 1.838849 2 4 45…
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A: Introduction: The die is fair.
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Q: Follow the 8 steps in regression analysis to answer the problem. [NOTE: ONLY SOLVE LETTER G] Access…
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Q: 4) Let X have the p.m.f. f(r; 8) = 0" (1 – 0)*-z, x = 0,1. We test Ho : 0 = 0.5 vs. Ha : 0 < 0.5 by…
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Q: Provide a detailed and comparative account of the two tests of heteroskedasticity (the Breusch-Pagan…
A: Please find the explanation below. Thank you
Q: ty notation? (Z2-3.87) x P(T2-3.87) 2 x P(ZS-3.87) PITS-3 87)
A: Given Samples of 50, test statistic of t = - 3.87
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A: The first quartile (Q1) is a value below which 25% of the observations lies and above which 75% of…
Q: 1. The mean serum cholesterol level of a large population of overweight children is 220 milligrams…
A: Disclaimer: Since you have asked multiple question, we will solve the first question for you. If you…
Q: What is the conditional probability that exactly four heads appear when a fair coin is flipped five…
A: Given that, A fair coin is flipped 5 times then outcomes are 25 =32
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A: Given: Sample size, n=12 Day Temp Sales 1 79 147 2 76 143 3 78 147 4 84 168 5 90 206…
Q: The percentile corresponding to the data value 25 is
A: Percentile is the location measure. It divide the data set into 100 equal parts with 99 points.…
Can I use
CRONBACH’S ALPHA
in testing the reliability of the device? How?
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- Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.A medical researcher says that less than 72% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 70% think that healthy children should be required to be vaccinated. At a = 0.01, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and H₂- Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not %. OB. % of adults in the country think that healthy children should be required to be vaccinated. C. Less than 72 % of adults in the country think that healthy children should be required to be vaccinated. OD. More than % of adults in the country think that healthy children should be required to be…I am trying to find the breakdown of the alpha, sensitivity, and specificity .. I hope this makes sense.
- A researcher wanted to examine the effectiveness of Vitamin C on the number of colds a year. The researcher obtained a sample of adults and asked to take Vitamin C daily. The average number of colds a year among adults is known to have the average of μ = 3On the basis of this sample, can the researcher conclude that Vitamin C has an effect on the number of colds a year? Use alpha =.05 two-tailed test. Colds: 2,2,2,1,3,3,1,2 Conducta two-tailed test with alpha = .05. Q1: State your null and research hypotheses using complete sentences Q2: What is the df? Q3: What are the cut-off points Q4: What is the standard deviation? You can just include the answer for the mean, SS, and the standard deviation. No need to type your computation. Q5: What is the estimated standard error? Show your computation. Q6: What is the t-value? Show your computation. Q7: State your conclusion thoroughly.two types of preoperative skin preparation before performing open heart surgery. These two preparations used aqueous iodine and insoluble iodine. Do these data provide sufficient evidence at the α = 0.05 level to justify the conclusion that they type of skin preparation and infection are associated?The test for screening donated blood for the presence of the AIDS virus was developed in the 1980s. It is designed to detect antibodies, substances produced in the body of donors carrying the virus; however, it is not 100% accurate. The developer of the test claimed that the test would produce fewer than 5% false positives and fewer than 1% false negatives. In order to evaluate the accurace of the test, 1,000 persons known to have AIDS and 10,000 persons known to not have AIDS were giventhe test. The following results were tabulated: Q. Is there substantial evidence (a=0.01) that the test produces less than 2% false negatives?
- A mutation in Gene A is thought to be associated with a disease. The mutation in Gene A is found in 5% of the population. 2% of the whole population is diagnosed with disease B at some point in their life time. 1% of the population both has the mutation and also gets diagnosed with the disease in their life time. Is the provided data adequate to test the independency of mutation in Gene A and occurrence of Disease B? If it is not, what other information or data is needed to test the independency? What is the probability of Disease B, among the individuals with the mutation in Gene A? What is the probability of having the mutation in Gene A among the individuals with Disease B? If an individual has the mutated Gene A, what is their Relative Risk of developing the disease?A researcher randomly selected a sample of n = 500 individuals from a population with µ = 120 and administered an experimental treatment to the sample. What the researcher should expect if the treatment has no significant effect?A medical researcher says that less than 82% of adults in a certain country think that healthy children should be required to be vaccinated. In a randon sample of 300 adults in that country, 78% think that healthy children should be required to be vaccinated. At a = 0.10, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state Ho and Ha Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) CA. Less than 82 % of adults in the country think that healthy children should be required to be vaccinated. O B. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not %. O C. More than % of adults in the country think that healthy children should be required to be vaccinated. O D. % of adults in the country think that healthy children should be required…
- Captopril is a drug designed to lower systolic blood pressure. When subjects were treated with this drug, their systolic blood pressure readings (in mm Hg) were measured before and after the drug was taken. Results are given in the accompanying table (based on data from "Essential Hypertension: Effect of an Oral Inhibitor of Angiotensin-Converting Enzyme," by MacGregor et al., British Medical Journal, Vol. 2). Using a 0.01 significance level, is there sufficient evidence to support the claim that captopril has an effect on systolic blood pressure?Explain the Stationarity in the AR(1) Model?An article in Knee Surgery, Sports Traumatology, Arthroscopy (2005, Vol. 13, pp. 273-279), considered arthroscopic meniscal repair with an absorbable screw. Results showed that for tears greater than 25 millimeters, 15 of 17 repairs were successful while for shorter tears, 22 of 31 repairs were successful. (a) Is there evidence that the success rate is greater for longer tears? Use a = 0.05.What is the P-value? (b) Calculate a one-sided 95% confidence bound on the difference in proportions that can be used to answer the question in part (a). (a) There evidence that the success rate is greater for longer tears. The P-value is Round your answer to four decimal places (e.g. 98.7654). (b) The one-sided 95% confidence bound is SPi - P2. Round your answer to three decimal places (e.g. 98.765).