A car insurance company is seeking information about the age of its customers. From a sample of 121 randomly selected customers the mean is 48.0 years and a standard deviation is 11.2 years. Find the lower confidence limit (LCL) of the 98% confidence interval for the population mean age. Round your answer to one decimal place.

Q: Employees in a company experience distractions (phone calls, emails, unscheduled visits etc.) during…

A: From the provided information, Mean (µ) = 95 Standard deviation (σ) = 18 Sample size (n) = 36

Q: It is estimated that 10% of the steel bolts produced at a factory are defective. Tests, carried out…

A: Given,n=5p=0.1q=1-0.1q=0.9Let X is the number of faulty bolts found in a sample groupof five bolts .

Q: Suppose a gambler wins P50 if the sum of dots in a toss of a pair of fair dice is either 7 or 11,…

A: When tossing a pair of fair dice, the outcomes are, The outcomes for the sum 7 are (1, 6), (2, 5),…

Q: Assume the average life-span of those born in the U.S. is 78.2 years with a standard deviation of 16…

A: Given information: The average life span of those born in country U is 78.2 years and its standard…

Q: QUESTION 1 Find the z-score that marks the 5th percentile (denoted P5). That is, find the z-score…

A: given data  standard normal distribution  Z~N(0,1)  5th percentile = ?

Q: a box of 800 tickets contains 368 1s and 432 0. one hundred draws will be made at random with…

A: Note: Hey, since multiple subparts are posted, we will answer first three subparts according to our…

Q: 7. The data shows the number of losses by the team that won the NCAA men’s basketball championship…

A: The number of looses have been given as 1-1, 4-4, which is possibly the typo of 0-1 and 4-5. We…

Q: Suppose they conducted another set of experiment with increased sample size and saw that the three…

A: Treatments Mean difference p-value 0mM-5mM 2.6283 <0.001 0mM-10mM 3.9383 0.0112 5mM-10mM…

Q: The following table shows students’ test scores on the first two tests in an introductory statistics…

A: Regression equation is used to measure the predicted value. It explain the relationship between the…

Q: If the researcher decides to test this hypothesis at the α=0.05 level of​ significance, determine…

A: b) From the alternative hypothesis, the hypothesis is less than case. That is, the test is lower…

Q: Part 2: Two-Sample T Methods The following data show the results of two random samples that measured…

A: Given information: The given data is, Li-ion(x) NiMH(y) 113 90 101 95 93 93 90 92 95 92…

Q: (a) If a survey participant is selected at random, what is the probability that he or she is…

A: Required probability is P(satisfied)

Q: If X has the p.d.f f(x)= [x,0<x<1 10, otherwise find the p.d.f of Y = 8X³.

A:

Q: The monthly salaries of employees of a construction company is normally distributed and averaged at…

A: Here, μ=16,000, σ=2500, and n=25.

Q: The income of farmers depends on various factors. To predict the income of the next year, a study…

A: 1.1) a) From the first plot, it can be depicted that as the predicted value increases from small to…

Q: Consider a sample of 46 football games, where 29 of them were won by the home team. Use a 0.10…

A: n=46x=29p^=xn=2946=0.6304α=0.10hypothesis:H0:p=0.5Ha:p&gt;0.5

Q: A book can be classified as either non-fiction or fiction. Suppose that 91% of books are classified…

A: Here, p=0.91.

Q: The probability of a head in tossing a coin is 1-in-2. This means that as we make more tosses, the…

A: The probability of a head in tossing a coin is 1-in-2. This means that as we make more tosses, the…

Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

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

Q: One of the biggest factors in determining the value of a home is the square footage. The…

A: The question is about correlation and regression Given :   To find : a ) Identifying explanatory…

Q: p[rz 23] If X is a N(2,3), find PY2 where Y+1-X.

A:

Q: The useful life of a certain battery is normally distributed with a mean of 328 hour standard…

A:

Q: A Hi-Tech company has introduced a new flash disk. Some dealers and customers have complained that…

A: Given  Sample proportion p ^=7.7%  Margin of error=e=0.048  Level of significance ɑ=0.05

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

A:

Q: QUESTION 26 Employees in a company experience distractions (phone calls, emails, unscheduled visits…

A: Given problem Given that   Employees in a company experience distractions during their office…

Q: 7.38 Food intake and weight gain. If we increase our food intake, we generally gain weight.…

A: Given the data as Weight before Weight after 55.7 61.7 54.9 58.8 59.6 66 62.3 66.2 74.2…

Q: Conduct ANOVA with a = 0.05 for this data and calculate the F-ratio and p-value. Round your answer…

A: Conduct ANOVA by using MINITAB. MINITAB procedure: Step1: Choose Stat &gt; ANOVA &gt; One-Way.…

Q: A pediatrician wants to determine the relation that exists between a child's height, x, and head…

A: From the part a, The regression equation is, Y^=0.194X+12.5

Q: 4. The weights of bags of chips is normally distributed with µ = 10.2 ounces and σ = 0.12 ounces.…

A: Given that, The weights of bags of chips is normally distributed. The mean of this normal…

Q: The data in the accompanying table is from observing the count of bacteria. The COUNT (Y) is…

A: From the given information, the response variable Y denotes COUNT recorded in 1000's. The…

Q: Many educational institutions award three levels of Latin honors often based on GPA. These are cum…

A:

Q: An article contained the following observations on degree of polymerization for paper specimens for…

A: Procedure to construct boxplot using excel: Enter the data in an excel sheet. Go to Insert &gt;…

Q: The data in the following table show the association between cigar smoking and death from cancer for…

A: The marginal frequencies are computed as shown below:   Died from Cancer Did Not Die from Cancer…

Q: A random sample of the closing stock prices in dollars for a company in a recent year is listed…

A: Given data is…

Q: ) Hence test whether ? is significant. Give reasons for your answer.

A: From the above output  The test statistic F=7954393/925892 F=5.31  P value of the test statistic is…

Q: The Diversity, Equity, and Inclusion (DEI) office of a major multinational bank is investigating the…

A: Solution-: Given: n=900, P=0.10 We want to find (a) The mean of p^=? (b) The standard deviation of…

Q: The values listed below are waiting times (in minutes) of customers at two different banks. At Bank…

A: The following information has been provided: Bank A 6.4 6.6 6.7 6.8 7.1 7.3 7.5…

Q: The probability that a card drawn from a pack of 52 cards will be a diamond or a king, is.

A:

Q: R can be used to find the probability of obtaining a given F value or one more extreme (calculates…

A:

Q: Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials,…

A: From the provided information, Sample size (n) = 5794 From which 151 developed the adverse reaction…

Q: The price of iPhone 13 pro max is recorded at a random sample of 40 electronics stores in UAE. The…

A: Given information: 90% confidence interval for the mean price of IPhone 13 pro max was (3109 Dhs,…

Q: In a charity show tickets numbered consecutively from 101 through 350 are placed in a box. What is…

A: The tickets numbered from 101 to 350. The total number of tickets is 250.

Q: Find the probability P(EC) if P(E) = 0.31. The probability P(E) is. (Simplify your answer.)

A: find out the probability of p(Ec) =?given data p(E)=0.31we know that the p(E)+p(Ec)=1

Q: Express the original claim in symbolic form. Let the parameter represent a value with respect to…

A: Given claim: The mean systolic blood pressure of all healthy adults is less than 126 mm Hg. a)…

Q: Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company…

A: given data, n=10023% of them candies are bluep(blue) =0.23claim: p=0.21

Q: S and Sy [Select] Pearson Correlation Coefficient (r): [Select] = Regression line equation: [Select]…

A: By bartleby policy i can gives only 3 subparts at a time

Q: A Japanese industry is considering on setting up plants in the Philippines. Define the following…

A: For any two events A and B, union of A and B, is the event of occurrence of either A or B or both.…

Q: Define nth Moments about Origin

A: Solution-: We want to define nth moments about origin.

Q: Determine C given: C= - c = [³ 4 3 -2 1 4 12 6 3 3 1 6 56 -4 3 25 8-95

A:

Q: QUESTION 4 Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 9…

A: The question is about normal distribution Given : Mean weight of potatoes ( μ ) = 9 ounces Std.…