Express the null hypothesis and the alternative hypothesis  in notation form in the following scenarios: 1. the principal of the school claims that the mean age of the teachers is 45 years. the mean age of the randomly selected 35 teachers is 42 years, which is not equal to what is claimed by the principal. 2. the mean annual income of worker who are college graduates is greater than 100,000 ayear.  3. The percentage of women who watches sports on TV is not 40% as claimed by a researcher.

Q: If the null hypothesis is rejected at a level of significance of 5%, then in some cases, it could be…

A: We have to find the statement is true or false..

Q: What are the null and alternative​ hypotheses

A: Since , claim is that the manager has believed the wait time was 3 minutes. Our aim is to find the…

Q: Express the null hypothesis and the alternative hypotheses in notation form in the following…

A: Note: Please repost remaining questions as i can answer only 1 question as per my policy. 1) Given…

Q: are conducting a study to see if the accuracy rate for fingerprint identification is significantly…

A: A hypothesis is said to be left tailed, if the population parameter is less than some hypothesized…

Q: A newsletter publisher believes that 25%of their readers own a personal computer. Is there…

A: Given that  A newsletter publisher believes that 25%of their readers own a personal computer. Level…

Q: ​b) A pharmaceutical company wonders if its new drug has a cure rate different from the 58​% rate…

A: Here we are conducting a hypothesis test to check if the cure rate of new drug is different from the…

Q: The mathematics department at one university reports that the failure rate for College Algebra is no…

A: 2 types of errors. Type 1: Rejecting null hypothesis when it is True Type 2: Fail to reject null…

Q: The mayor of a town believes that less than 53 % of the residents favor annexation of a new…

A: Here we need to state the null and alternative hypothesis for the given situation.

Q: Find the P-value for a left-tailed hypothesis test with a test statistic if z=-1.26. Decide whether…

A: Given information- We have given a left-tailed hypothesis test. The value of the test statistics, z…

Q: ​If, in a sample of n=25 selected from a normal​ population, X=52 and S=10​, what is the value of…

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Q: Test the null hypothesis B= 60 against the alternative hypothesis B > 60 at the 0.01 level of…

A: Assuming that part b and c are already completed and regression model has been fitted using…

Q: As a result of complaints from customers about delivery times, the manager at a pizza delivery…

A: Given information- We have given that the average delivery time is 30 minutes. And the manager wants…

Q: Are the requirements met to test a hypothesis for the following two population proportions? If not,…

A: Conditions for testing the population proportion: The samples should be selected at random. The…

Q: he body weight of a healthy 3-month-old colt should be about μ = 62 kg. (a) If you want to set up a…

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Q: If the p-value is greater than 0.5, then you have proven the null hypothesis is true. True or False

A: We have to find given statement is true or false..

Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…

A: We have to find out given null and alternative hypothesis that we would use for this hypothesis…

Q: A researcher selects a sample from a population with a mean of m = 40 and administers a treatment to…

A: It is given that the claim is that the treatment is expected to decrease scores.

Q: If the level of significance for a test for independency was 5% and the p-value was 0.03, what would…

A: Given,   P-value = 0.03 Level of significance = 0.05   The objective is to find the conclusion.

Q: State the null and alternative hypotheses for the above scenario.

A: HERE given, Our environment is very sensitive to the amount of ozone in the upper atmosphere. The…

Q: Dreamfilms Studios boasts that its summer features are so good that at least half of all tickets…

A: Claim :- Less than half of all tickets sold are for Dreamfilms movies. Final Decision is Fail to…

Q: Which of the following is the correct way of stating the null hypothesis of the given problem?

A: Test is that whether there is a relationship between the post-test scores of students in Algebra and…

Q: A coin-operated drink machine was designed to discharge a mean of 8 ounces of coffee per cup.…

A: GIVEN: μ=8 Hypothesis: The null hypothesis is given below: H0: μ=8 The alternative hypothesis is…

Q: A snack food company produces a 454g bag of pretzels. Although the actual net weights deviate…

A: ANS#- Given, A snack food company produces a 454g bag of pretzels. Although the actual net weights…

Q: A researcher administers a treatment to a sample from a population with a mean of µ=60. If the…

A: Null hypothesis is the statement of the no difference whereas the alternative hypothesis states the…

Q: The test statistic of z = 2.47 is obtained when testing the claim that p > 0.8. Identify the…

A: Given, The test statistic of z = 2.47 is obtained when testing the claim that p > 0.8. The…

Q: If I conduct a hypothesis testing with Type I error set at 0.05 and a resulting p-value of 0.3, what…

A: Type I error: The type I error occurs when rejecting the null hypothesis if it is true. It is also…

Q: A certain university claims that for the last school year the proportion of students who were not…

A: Given that  Claim : The proportion of students who were not able to earn a college diploma is at…

Q: A coin-operated drink machine was designed to discharge a mean of 7 ounces of coffee per cup.…

A:

Q: A city police department is considering replacing thetires on its cars with a new brand tires. If μ1…

A: A city police department is considering replacing the tires on its cars with new brand tires. As…

Q: A teacher is comparing the mena study time of his freshmen and senior students. He believes that his…

A:

Q: 15. . When a p-value is high, this means there is strong evidence against the ull hypothesis А. Tre…

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

Q: 3. The local school system feels that the number of student absences in this county is lower than…

A: We are given that: Population mean=μ=5.6sample mean=x¯=4.9p-value=0.0052 To answer the question we…

Q: What is the p-value if, in a two-tail hypothesis test, ZSTAT = +2.00?

A: Given, A two-tailed test with z-stat=+2.00

Q: A publisher will only publish a Statistics text book if they believe that more than an average of…

A: The type I error is defined as rejecting the null hypothesis when actually it is true. The type II…

Q: A hospital director is told that 33% of the emergency room visitors are uninsured. The director…

A: Stating the appropriate null and alternative hypotheses:Based on the study, it was found that 33% of…

Q: When the null hypothesis is true, the F test statistic is close to                           ["",…

A: H0: Null Hypothesis F test statistic (F)=Variance of Dataset1Variance of Dataset2

Q: A decade-old study found that the proportion of high school seniors who felt that "getting rich" was…

A: We have to find out hypothesis for given data  Here data is in proportion So we use p ..

Q: If the level of significance in a hypothesis test is 1 %, what would the p-value have to be for…

A: We fail to reject the null hypothesis when the p value is greater than the significance level. We…

Q: You conduct a two tailed hypothesis test and get a test statistic of z=1.17 and a pvalue of .2420.…

A: Given: Test statistic (z) = 1.17 Two tailed p-value = 0.2420

Q: In 2000, the mean math SAT score for students at one school was 472. Five years later, in 2005, a…

A:

Q: The owner of a professional basketball team claims that the mean attendance at games is over 17,000…

A: In this case, the owner of a professional basket ball team claims that the mean attendance at a game…

Q: A recent article in a university newspaper claimed that the proportion of students who commute more…

A: Claim : The proportion of students who commute more than 15 miles to school is no more than 20%. Let…

Q: The mean SAT Score in mathematics is 506. The founders of a nationwide SAT preparation course claim…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: In a two-tailed test of hypothesis, the sign in the alternative hypothesis is: not equal to b.…

A:

Q: What is the observed test statistic for this   test?

A:

Q: A magazine reported that at the top 50 business schools in a​ region, students studied an average of…

A:

Q: A newsletter publisher believes that 29% of their readers own a laptop. Is there sufficient evidence…

A: Let p be the proportion for readers own a laptop  Given p=29%=0.29, level of significance ɑ=0.05

Q: A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly…

A: