Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is​ performed, how should you interpret a decision that​ (a) rejects the null hypothesis or​ (b) fails to reject the null​ hypothesis?   A report claims that less than 80​% of households in a specific county struggle to afford basic necessities. Does the claim represent the null hypothesis or the alternative​ hypothesis?

Q: 7. For a hypothesis test evaluating the effect of a treatment on a population mean, what basic…

A: Given, The statement is for a hypothesis test evaluating the effect of a treatment on a population…

Q: To check the normality test using shapiro-wilk , if the p value is below 0.05? A. Failed to reject…

A: Solution-: To check the normality test using Shapiro-wilk, if the p value is below 0.05? (A) Failed…

Q: According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults…

A: H1  = Alternative hypothesis

Q: In a sample of 91 children selected randomly from one town, it is found that 15 of them suffer from…

A: In a sample of 91 children selected randomly from one town, it is found that 15 of them suffer from…

Q: (c) Carry out an appropriate hypothesis test at a = 0.05 to see whether the 2016 census proportions…

A: Given : Samples :

Q: If a hypothesis test produces a z-score in the critical region, which decision should be made?…

A: The critical region is also called as rejection region which is the set of test statistic values for…

Q: The mayor of a town has proposed a plan for the annexation of a new bridge. A political study took a…

A: From the provided information, The claim that the percentage of residents who favour annexation is…

Q: A researcher selects a sample and administers a treatment for anxiety to the individuals in the…

A: In general, the null hypothesis hypothesized the exact opposite of purpose of the research and it…

Q: Scores on a certain IQ test are known to have a mean of 100.  A random sample of 60 students attend…

A: Given, null hypothesis : μ=100  Alternative hypothesis : μ>100 Level of significant=0.01

Q: Women athletes at the University of Colorado, Boulder, have a long-term graduation rate of 67%.…

A:

Q: A local pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The…

A: Claim : average time spent on a delivery does not exceed 26 minutes.

Q: 43. Determine whether the claim represents the null hypothesis or the alternative hypothesis. If a…

A: Given, The claims that we want to identify whether it is null hypothesis or alternative hypothesis.

Q: Use α = .05  Independent-samples t test: (a) develop a research question that can be addressed with…

A: We use independent sample t test when we a sample from categorical data and another sample from the…

Q: A hypothesis test is to be performed. Describe the two possible outcomes of the test using the…

A: It is given that, last month the average waiting time at a bank was 8.4 minutes.

Q: It has been claimed that for the population of U.S. commercial jets, the mean age is less than 18…

A: Step 1:The hypotheses to be tested are:H0: μ = 18, that is, true mean age is 18;Versus:H0: μ <…

Q: True or false If the p-value for a hypothesis test is greater than 0.01, we fail to reject the null…

A:

Q: Which statement is NO1 true about hypothesis tests? Hypotheses are statements about the population…

A: Hypothesis testing is one of the main concept of inferential statistic which help in drawing the…

Q: Test the given claim. Identify the null hypothesis, alternative hypothesis, test satistic, P value,…

A: For sample 1, we have that the sample size is N1=2029N_1= 2029, the number of cars having rear…

Q: A researcher is designing an experiment.  Ultimately, she is hoping to reject her null hypothesis…

A: From the provided information, The researcher is hoping to reject her null hypothesis (i.e. show…

Q: Which is the correct null hypothesis based on this statement: People with diabetes have higher…

A: The test is to check whether people with diabetes have higher systolic blood pressure than people…

Q: The mayor of a town has proposed a plan for the annexation of a new bridge. A political study took a…

A: Step 1: Denote p as the true proportion of the residents, who favoured annexation. It is need to…

Q: The mean height of a certain kind of plant is  193  centimeters. Suppose we want to carry out a…

A:

Q: Detemine the P-value for this hypothesis test.

A: We have two different population. we have assumed that the populations are normally distributed. We…

Q: A hospital director is told that 56% of the emergency room visitors are insured. The director wants…

A:

Q: Why can decreasing the probability of a type I error cause an increase in the probability of a type…

A: Why can decreasing the probability of a type I error cause an increase in the probability of a type…

Q: Formulate the indicated conclusion is nontechnical terms.  Be sure to address the origianl claim.…

A: The original claim of the test is that 'The proportion of Americans that have seen a UFO, p, is less…

Q: According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults…

A: We have to find hypothesis for given data..

Q: A physician wants to determine if a supplement is effective in helping men lose weight. She takes a…

A: Explanation:The physician is specifically interested to know if the supplement helps to reduce…

Q: A company has just developed a new antibiotic. 2 percent of children taking competing antibiotics…

A: Solution:

Q: The mean height of a certain kind of plant is  137  centimeters. Suppose we want to carry out a…

A: Here, we need to test whether there is any difference between the mean height of the plant when the…

Q: Determine whether the claim stated below represents the null hypothesis or the alternative…

A: The null hypothesis is: H0: σ=3.1 miles per gallon The alternative hypothesis is: H1: σ>3.1 miles…

Q: Are you an impulse shopper? A survey of 600 grocery shoppers indicated that 62% of males and 51% of…

A:

Q: When conducting a chi-square test of independence in a contingency table, as the difference between…

A: chi-square test of independence:

Q: Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim A…

A: From the provided information, Population proportion (p) = 0.21 The claim is that more than 21…

Q: Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past…

A: State the hypotheses. That is, there is no evidence that the population proportion of women…

Q: Why can decreasing the probability of a type I error cause an increase in the probability of a type…

A:

Q: newsletter publisher believes that 48 % of their readers own a laptop. A testing firm believes this…

A: Given : A newsletter publisher believes that 48 % of their readers own a laptop.

Q: Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim.   A…

A: Claim : p<1/10000   So Ho : p=1/10000       Ha : p<1/10000   Conclusion fail to reject Ho.

Q: You are a process engineer for a company that manufactures widgets. A particular machine at your…

A: Given that  Sample size n =63 Population proportion p=36.5%=0.365 Sample proportion p^= 31.0%=0.310…

Q: Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct…

A: Given : the results of the sampling lead to nonrejection of the null hypothesis. fact is the mean…

Q: A risky eye surgery for patients in danger of permanent blindness is known to historically cure the…

A: Claim: The new procedure is improve the rate of cure in patients is 35%. The claim is in the form of…

Q: If the p-value=0.03, check all that apply: the result is statistically significant at the 4% level.…

A:

Q: 3. In 2010, the United Nations claimed that there was a higher rate of illiteracy in men than in…

A:

Q: Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim.…

A: Claim : p<14/10000   So hypothesis Ho : p=14/10000                           Ha : p<14/10000…

Q: The mayor of a town has proposed a plan for the annexation of an adjoining community. A political…

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

Q: In the chi square test, the expected frequencies: A. refer to those frequencies actually observed…

A: The formula to find the expected frequency is n*p.

Q: When a researcher conducts an experiment and fails to find significant results, what should she…

A: According to the provided information, The researcher conducts an experiment and fails to find…

Q: The results obtained from statistics analysis between the pulse rate at baseline and the pulse rate…

A:

Q: is there a difference in the proportions? What is your decision? Accept the alternative…

A: Given n1=80p^1=0.55n2=100p^2=0.48α=0.10