For each of the following situation, write the null hypothesis (H-) and the alternative hypothesis (Hs) in both sentence and symbolic form. a. A simple random sample of 50 recorded speeds (in km/h) is obtained from cars traveling on a section of a highway in Jamaica. The sample has a mean of 85.5 km/h with a standard deviation of 5 km/h. A researcher working with the Jamaica Constabulary Force (JCF) wants to test the claim that the mean speed of all cars is different from the posted speed limit of 80 km/h. b. According to data from a tobacco institute testing laboratory, Matterhorn cigarettes contain on average at most 0.9 milligrams of nicotine. An advocacy group commission an independent test to see if the mean nicotine content is higher than the industry laboratory's claims.

Q: 2. Consider the following null and alternative hypothesis. H₂:μ = 120 versus H₂:μ> 120 A random…

A:

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A: The population mean is 84.7 with a standard deviation of 9, sample size is 16, and the sample mean…

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

A: We have to find correct null hypothesis..

Q: 3. Given the null hypothesis, "The mean age of the patients in a hospital is equal to 26", state the…

A:

Q: For the problem below-Use .05 2-tailed alpha level. State null and alternative hypotheses. Report…

A: The data is given as : To check: mean of the individual motivation on performance is equal to the…

Q: The human resources department of a large investment bank announced that the number of people it…

A:

Q: 5) The managers for a fruit juice facility claim that the standard deviation for the ounces per…

A: We have to find correct hypothesis.

Q: he records of a casualty insurance company show that, in the past, it’s clients have had a mean of…

A: Given that SD=0.06

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…

A:

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

A: Given that  Until now , The manager has believed the delivery time was 25 minutes.   We know that…

Q: Two populations have means μ0 = 9 and μ1 = 10.15, and they both have a standard deviation of σ =…

A: Given ,  μ0 = 9 and μ1 = 10.15 standard deviation σ = 3.003  n = 25  α = 0.05.

Q: For each statement, select the correct null hypothesis, H0H0, and alternative hypothesis, HaHa, in…

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Q: For each statement, select the correct null hypothesis, H0, and alternative hypothesis, Ha, in…

A: a) Claim: A researcher wonders if young American males between the ages of 18 and 21 tend to be…

Q: With a p value of .04 and an ⍺ of .05, should you reject or fail to reject the null hypothesis?"

A: Given that: p-value= 0.04 ⍺=0.05

Q: If you decided to use a one-tailed test and failed to reject the nul hypothesis, but found that the…

A: One-tailed test: It is a test used in testing of hypothesis. It indicates the chances of effect in…

Q: Suppose a sample size of 87 was used to conduct a right tailed hypothesis test for a single…

A: p-value is the probability of given results that are obtained when null hypothesis is true.

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: Find the​ P-value for a​ left-tailed hypothesis test with a test statistic of z=−1.42. Decide…

A: P( z < -1.42 ) = NORMSDIST( -1.42) ------ Excel function                      = 0.0778…

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: 2. Consider the following null and alternative hypothesis. Η : μ = 120 versus Ha: μ > 120 A random…

A: GivenThe null and alternative hypothesis isH0:μ=120Ha:μ>120sample size(n)=81sample…

Q: Suppose a sample size of 103 was used to conduct a left tailed hypothesis test for a single…

A: Given Information:  Sample size (n) = 103  Hypothesis: Ho: u = 22  p-value = 0.04

Q: Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per month. Eli is…

A: Here we need to choose from the correct option.

Q: Which of the following relates to the rejection of the null hypothesis when it is actually true? 1.…

A: Answer: Type I Error Type I Error is also calculated as, α=P{ Reject Ho when it is true}=P{ Reject…

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: why you did not reject the null hypothesis, the statistics is one tailed to the right , so anything…

A: Doubt: why you did not reject the null hypothesis.

Q: 2. Consider the following null and alternative hypothesis. H.:µ = 120 Ha:µ > 120 versus A random…

A: Given : s

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: Given information- Population mean, µ = 1.8 Population standard deviation, σ = 0.06 We have to test…

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: Suppose a sample size of 87 was used to conduct a right tailed hypothesis test for a single…

A: According to the provided data, 87 individuals are randomly selected to conduct a right tailed…

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: Based on certain data, a null hypothesis is rejected atthe 0.05 level of significance. Would it also…

A: Concept of p-value: The p-value in hypothesis testing is the probability of obtaining a test…

Q: If the alternative hypothesis was H1: µA # µB (that is, you are doing a two-tailed test), what was…

A: Given that  Test statistic t =2.70 Degree of freedom =df =15

Q: The Board of Visitors hypothesize that self-esteem is increased by the time spent in college. After…

A: Given data is appropriate for t-test for paired sample . because it is a small sample and it is…

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

A: Type I error= Rejecting the null hypothesis when it is TRUE. Type II error = Fail to reject null…

Q: For hypothesis tests with one sample, if the population standard deviation is unknown, which of…

A:

Q: The p-value was reported to be small, so we would reject the null hypothesis at a 5% level and…

A: A random sample of 80 junior hockey league players in 2018 was taken. The NHL claims that there is…

Q: In testing hypotheses, which of the following would be strong evidence against the null hypothesis?…

A: Basics:

Q: The records of a casualty insurance company show that, in the past, its clients have had a mean of…

A: The claim is that the standard deviation of the number of accidents per day is no longer equal to…

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

A: From the given information, the claim of the problem is the true mean discharge differs from 8. That…

Q: A fast-food restaurant claims that a small order of french fries contains 120 calories. A…

A: H0: μ = 120 H1:μ > 120 ________________________ When Ho is true , P-value is the probability that…

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

A: To express the Null hypothesis and Alternative Hypothesis in notation form for the given statment…

Q: Records from a toy manufacturing company showed that the mean time that the top-selling toy captured…

A: The random variable time follows normal distribution. We have to write the hypotheses. This is one…

Q: Which of the following accurately describes a hypothesis test?

A: We know that the hypothesis testing is a part of drawing inference about population.

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

A:

Q: what would be the alternate hypothesis and type of test

A: Claim : the average time from 0 to 60 miles per hour is not equal to 8.7 seconds

Q: Last year the mean cost u for a one-bedroom rental in a certain city was $1,200 per month., Eli is…

A: The summary of statistics is, x¯=1180,μ=1200 Let μ denote the mean for a one bed room rental in a…

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

A: The test is about to see whether the true mean discharge of coffee per cup is differs from 7 or not.