How should I get z critical using this picture?

Q: BE SURE TO ANSWER THE LAST OPEN ENDED QUESTION!! Petra is doing a survey Which of the following…

A: Given that Which of the following descriptions is an example of convenience sampling? A. Petra…

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 12 for the population…

A: We have given that,  Confidence interval = 99%, margin of error (E) = 4 and population standard…

Q: A study on the effects of color on easing test anxiety compared anxiety test scores of participants…

A: Given that: Yellow Paper Green Paper 17 20 19 26 28 17 18 24 20 25 21 26 19 21 23…

Q: SAT scores in one state is normally distributed with a mean of 1532 and a standard deviation of 200.…

A: Given that, The random variable X is SAT scores in one state. It is normally distributed.…

Q: The waiting times between a subway departure schedule and the arrival of a passenger are uniformly…

A: From the provided information, The  waiting times between a subway departure schedule and the…

Q: Problem 2. Consider the linear regression set-up Y = XB+ e where €~ Nn (0,02 In); the design matrix…

A: ANSWER:  (i) LS estimates Bo and B1 are chosen to minimize the sum of squared residuals e = Y -…

Q: A study of 420,019 cell phone users found that 0.0321% of them developed cancer of the brain or…

A: Givensample proportion(p^)=0.0321%sample size(n)=420019

Q: Can you show me how to solve the question above in excel please?

A: null and alternative hypothesis H0:μ=0H1:μ≠0

Q: A company prices its tornado insurance using the following assumptions: • In any calendar year,…

A: Given that: Success probability, p=0.14 Sample size, n=14

Q: How do I develop an econometric model to test a realtor’s theory that location is the most important…

A:

Q: In general, after a group makes a reservation at a restaurant, they do not show up 20% of the time.…

A: We have given that p = 20% = 0.20n = 8  Here we will use binomial distribution because probability…

Q: Give the best point estimate for the population and construct a 99% confidence interval for the true…

A: Let μ be the population mean score for students. Given that, x¯= 3.4Sample size (n) = 26Sample…

Q: Heteroskedasticity arises because of non-constant variance of the error terms. We said proportional…

A: The linear regression model is valid when it satisfies few assumptions like Linearity, Normality,…

Q: What is a p-value, and how is it used in hypothesis testing?

A: According to the given question  We have to define P-value and how is it used in hypothesis testing.…

Q: A study compared three display panels used by air traffic controllers. Each display panel was tested…

A: Given information: The ANOVA output is given.

Q: can you explain more in detail what you would input in excel for part 3. I keep getting an error…

A: To perform regression with two variables in excel, after entering the data go to Data>Data…

Q: is there a faster way to do it on a ti-84calculator?

A: The number of data values is 13.

Q: The following is a random sample of IQ scores from a prestigious college: 94 101 109 109 115 117 119…

A: Given: random sample of IQ scores from a prestigious college:94 101 109 109 115 117 119 125 125 125…

Q: Find the z-score such that 41% of the area under the standard normal curve is to the right of that…

A: From the provided information, The z-score such that 41% of the area under the standard normal curve…

Q: e diameters of Douglas firs grown at a Christmas Tree Farm are normally distributed with a mean of 4…

A: GIVEN DATA, normal distributionμ=4σ=1.5we have to find out the given probabilities.

Q: For a Poisson random variable with a mean of 4 the standard deviation is approxiamately 1.414 (…

A: Given  data :  For a Poisson random variable with a mean of 4 the standard deviation is…

Q: For the standard normal curve, identify the z-score that corresponds to the 33rd percentile.

A: standard normal distributionZ~N(0,1)identify z score that corresponds to 33rd percentile

Q: If a population has a mean of 2.5, what is the mean of the sampling distribution if the sample size…

A: Introduction: It is required to find the mean of sampling distribution of the mean, when a sample of…

Q: %. of the military because they are too short or too tall? ght requirement is fairly small. ght…

A:

Q: You want to test the speed of your internet connection. You will test the claim that your average…

A: given data claim : μ > 4.3 Mb/sn =39x¯ = 4.9 Mb/sσ = 1.1 Mb/s

Q: Let X, Y be joint Gaussian random variables with E[X]=0,E[Y]=0, Var[X]=2, Var[Y] =4 and Cov[X, Y]…

A: From the given information Let X,Y be joint Gaussian random variables. EX=0, EY=0 VarX=2,  VarY=4…

Q: Consider again the drug company's test to see if a new version of its allergy medication provides…

A:

Q: Midland National Bank selected a sample of 40 student checking accounts. Below are their…

A: Given data :…

Q: K A genetic experiment with peas resulted in one sample of offspring that consisted of 439 green…

A: We have given thatn = 439x = 166p̂ = x/n = 166/439 = 0.3781Significance level (α) = 1 - 0.90 =…

Q: you start a backward elimination process with the most complex model possible Denoted by C ∗ S ∗ W,…

A: *Answer:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 267 days…

A: Given: Population mean μ=267 days Standard deviation σ=17 days P(x > 270 days) = ?

Q: Nine students have been chosen to take part in a study. Each student will be taught statistics by…

A: Given information: x¯d=-5.00sd2=77.0n=9α=.10

Q: A new weight-watching company, Weight Reducers International, advertises that those who join will…

A: Answer  By using the given data:  10 pounds the first two weeks with population standard deviation…

Q: A student was asked to find a 99% confidence interval for widget width using data from a random…

A: Answer  Given  Confidence interval CI = 99%  the interval is:  12 < μ < 30.5 sample size [n]…

Q: problem 1, two parts Data 2 3 ANOVA Regression Residual Total 4 5 Intercept 6 7 X 8 9 10 161 203 235…

A: Solution: From the given information,

Q: In a population of 210 women, the heights of the women are normally distributed with a mean of 64.4…

A: given data population size (N) = 210normal distributionpopulation mean (μ) = 64.4population sd (σ) =…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Given that: Sample size, n=4677 Number of successes, x=2619

Q: We know that the sample standard deviation is 11 and the sample size is 73. For what sample mean…

A: Given The data is as follows: H0: μ=30.6 vs Ha: μ>30.6 Population mean, μ=30.6 Sample size, n=73…

Q: How did you get the cumulative

A: Given information: data value frequency 16 6 17 7 18 5 19 4 20 2

Q: Solve the problem. A final exam in Math 160 has a mean of 73 with standard deviation 7.8. If 24…

A: Given that.   X~N( μ , ?)   μ=73 , ?=7.8  , n=24   Z-score =( x - μ )/?

Q: The following data is a regression model where the U.S. Department of Transportation has tried to…

A: In this case, the independent variable is, the percentage of motorists under the age of 21 (x) and…

Q: Refer back to the pizza-delivery Try It exercise. The mean delivery time is 36 minutes and the…

A: Here the given information is  The mean delivery time is 36 minutes and the population standard…

Q: A jury pool has 23 people that are married and 21 people that are not married, from which 12 jurors…

A:

Q: ESTIMATING STANDARD DEVIATION Listed below are sorted weights (g) of a sample of M&M plain candies…

A: Given information: The sorted weights of a sample of M&M candies are given.

Q: John has 3 kinds of fruits to be compared and he made subjective judgment on which fruit he likes…

A:

Q: QUESTION 5 Let X,Y be joint Gaussian random variables with E[X]=0,E[Y]=0, Var[X]=2, Var[Y]=4 and…

A: Hi! Thank you for the question. As per the honor code, we are allowed to answer 1 question at a…

Q: A local fast food restaurant interviews every 10th customer placing an order at the counter. What…

A: According to the question, a local fast food restraunt interviews every 10th customer placing an…

Q: Approximately 10% of all people are left-handed. Consider 12 randomly selected people. Find the…

A: Let X be the random variable from binomial distribution with probability (p) = 10% = 0.10 and sample…

Q: a. Construct a 90% confidence interval estimate for the population mean time wasted in a day due to…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: A company produces a light bulb that lasts for 1,200 hours. Periodically, the company gets…

A: The sample size is 80, sample mean is 1150 and sample standard deviation is 150.