Ben thinks that people living in a rural environment have a healthier lifestyle than other people. He believes the average lifespan in the USA is 77 years. A random sample of 12 obituaries from newspapers from rural towns in Idaho give x = 81.61 and s = 2.76. Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (a) State the null and alternative hypotheses: (Type "mu" for the symbol u , e.g. mu >1 for the mean is greater than 1, mu < 1 for the mean is less than 1, mu not = 1 for the mean is not equal to 1) H: H: (b) Find the test statistic, t = (c) Answer the question: Does this sample provide evidence that people living in rural Idaho communities live longer than 77 years? (Use a 10% level of significance

Q: QUESTION 5 Auto insurance companies are beginnning to consider raising rates for those who use…

A: given data claim : p ≥ 0.19n = 500x = 80α = 0.05p^ = xn = 80500 = 0.16

Q: "Suppose that in the past, 67% of all adults favored capital punishment. Do we have a reason to…

A: Here From given information Claim : proportion of adult favoring capital punishment is increased .…

Q: A drug, which is used for treating cancer, has potentially dangerous side effects if it is taken in…

A: n=25 x¯ = 50.695s2 = 0.0193α = 0.05 σ2 =0.02 μ = 50.69claim : σ2 &lt; 0.02in sd :     σ &lt; 0.1414

Q: 2.09 3.73 2.39 0.67 Determine the appropriate conclusion for this hypothesis test. The sample data…

A: Given data   sample size, n =1375 population proportion,p= 0.87 Significance…

Q: Question 20 A company that manufactures classroom chairs claims that the mean breaking strength of…

A: Let μ be the population mean breaking strength of the chairs. The claim is that the mean breaking…

Q: Based on that, the required sample size to estimate the population mean is equal to?

A: It is given that Margin of error E = 4 Level of confidence = 95% Population SD = 29 The critical…

Q: A medical research team claims that the mean recovery time for patients after the new surgical…

A: here use basic of hypothesis test

Q: Question 6 "Suppose that in the past, 37% of all adults favored capital punishment. Do we have a…

A: Here From given information Claim : proportion of adult favoring capital punishment is increased .…

Q: Suppose we take a sample of 2,500 blood donors from a population for which 50% (0.5) have type O+…

A: By the Empirical Rule, we know that for a normally distributed population with mean μ and standard…

Q: A newly proposed endoscopy method used to screen for colon cancer is tested among a random sample of…

A: The number of individuals has the colon cancer=16 The number of individuals test positive for the…

Q: 18.) Test the claim about the population mean µ at the given level of significance using the given…

A:

Q: QUESTION 5  Two different hardening processes, namely saltwater quenching and oil quenching are used…

A: Given data is,

Q: In 2003, Major League Baseball took steps to speed up the paly of baseball games in order to…

A: Introduction: Denote p1, p2 as the true population proportions of basketball games that finished in…

Q: Assume that a sample is used to estimate a population mean u. Find the 90% confidence interval for a…

A:

Q: Find the value of the test statistic. t= (Round to three decimal places as needed.)

A: Given that, The two data sets given are the number of hospital admissions on Fridays on the 6th of a…

Q: decision to reject or fail to reject the null hypothesis.

A: Level of significance (α) = 0.02 Sample size (n) = 50 Sample mean (x¯) = 349 min population standard…

Q: Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a…

A: Solution

Q: In 2003, Major League Baseball took steps to speed up the paly of baseball games in order to…

A: Given: sample sizes are: n1 = 94; n2 = 78. Among the games in 2002, x1 = 37 finished in less than 3…

Q: Question 9: give the hypotheses

A: Test is that whether the average battery range of the new vehicle is better than the competitor.

Q: The following four questions will be based on this problem. The mean of a population is assumed to…

A: The random variable X follows normal distribution. The population mean is 12.1. We have to test…

Q: State the null and alternative hypotheses for this test. Compute the value of the Test Statistic?…

A: Let p be the proportion of defectives produced by the machine. Given that sample size n=100,  Number…

Q: Question 36. After having made a decision on the test at the significance of a = 0.05, the most…

A: The objective of question 36 is to determine the most appropriate conclusion after conducting a…

Q: random sample of 35 teenagers, their average daily screen time was 123.2 minutes. Assume the…

A: According to the given information in this question We need to find the value of test statistic

Q: "A manufacturer of shampoo claims that 86% of the shampoo users prefer brand X. To test this claim,…

A: About 86% of the shampoo users prefer brand X. Sample size n=42 Out of which x=30 participants…

Q: Researchers collected a simple random sample of the times that 81 college students required to earn…

A: As the population standard deviation is not known, we will use t distribution. (a)

Q: QUESTION 14 AI Ain municipality is deciding whether or not to spend more money to reduce the amount…

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPART PLZ REPOST FOR REMAINING

Q: A researcher is interested in determining if the claim that a medical procedure takes onlv 1.5 hours…

A:

Q: Question 43 Commute times in the U.S. are heavily skewed to the right. We select a random sample of…

A: The sample size is 510, the sample mean is 28.0 minutes and sample standard deviation is 19.1…

Q: A random sample of 50 medical school applicants at a university has a mean raw score of 31 with a…

A:

Q: How is censored cases handled in the KM estimator? Let's consider the median survival time in…

A: Survival Analysis: The name of the variable containing the time to reach the event of interest or…

Q: Find the margin of error for a 95% confidence interval for estimating the population mean when the…

A: given data s = 9095% ci for μ.E = ?

Q: Find the critical value Za/2 that corresponds to the given confidence level. 97% Za/2 (Round to two…

A:

Q: 17.) A sample of 51 randomly chosen students was taken from a large population, and their GPAS were…

A: It is given that, We have a sample of size, n=51 x̅=3.10 and σ=0.40 We have, Z0.10/2= 1.645 Thus, a…

Q: 4. The average cost of a hotel room in Al Kharj is said to be SAR 190 per night. A random sample of…

A: We have given that,  Hypothesized mean (μ)= 190 , sample mean   (x̄) = 191.5, standard deviation (s)…

Q: Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a…

A: The mean height of women 20 years or older was 63.7 inches for a several years ago.

Q: Question 6 The researchers further believe that the mean bill lengths for the 3 species are…

A: Given information: No. of species=03Means, Species Adelie=μ1Species Gentoo=μ2Species Chinstrap=μ3

Q: Question 14 An accountant claims to be able to complete a standard tax return in under an hour. The…

A: The sample size: n=24 The sample mean: x¯=63.2 minutes The sample standard deviation: s=7.7 minutes…

Q: Question 8

A: a)Yes, if the level of significance is 5% then there is a statistical significant difference in…

Q: 7. A random sample is selected from a population that has a proportion of "success" of 0.75. Find…

A:

Q: e size = 40 e mean = 159 e standard deviation = 18.47 he appropriate null and alternative…

A: a)we have,n=40,x=159, s=18.47,μ=165The null hypothesis states that population means is equal to…

Q: QUESTION 20 It was found that the mean annual tumover rate of the Aspirin medicine bottie is 24. The…

A: given data  sample size n =67 sample mean = 11 sample sd = 12 H0 : μ = 24Ha : μ ≠ 24 Its a Two…

Q: What is the p-value for this hypothesis test?

A: Commute times in the U.S. are heavily skewed to the right. We select a random sample of 490 people…

Q: Question 2 The city of Chicago decides to understand whether its citizens consume more alcohol…

A: The question is about hypo. testing Given : Popl. avg. of alcoholic beverages that person consumes…

Q: "If an ANOVA had 16 observations in each condition, calculate the value of SS-within treatments…

A: From given data we have : T1=34.43, T2=31.55, T3=35.66, n=16

Statements and Logic

Logic is the analysis of general patterns of thoughts without regard to any specific sense of context.