A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are H0: p = 0.4 and Ha: p < 0.4. The test statistic and p-value for the test are z = -3.01 and p-value = 0.0013. For a significance level of a= 0.05, choose the correct conclusion regarding the null hypothesis. H0:________________________ Ha:_______________________ Compare the p-value and a:_______________ Decision:_________________________ Conclusion:___________________________________________________________

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: t critical value(t0)=-2.139              (from graph) The test is left tailed test

Q: Test the claim that the proportion of people who own cats is larger than 40% at the 0.01…

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A: Given,claim: The true mean discharge differs from 9.

Q: The plan is to reject the Null Hypothesis is the P-value is less than 0.05.  How many of the…

A: Significance level: In hypothesis testing the Type I error is said to be committed when true null…

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A:

Q: In recent years, approximately 55% of eligible voters take the time to vote in presidential…

A: The objective of this question is to determine whether there is convincing evidence at the 0.01…

Q: (d) For t= - 2.034, should you reject or fail to reject the null hypothesis? O A. Reject H, because…

A:

Q: ate whether the standardized test statistic z indicates that you should reject the null hypothesis.…

A: Here critical region is below -1.285 So use this to identify whether reject null hypothesis or not

Q: State whether the standardized test statistic t indicates that you should reject the null…

A:

Q: Match each p-value to the most appropriate conclusion.       A   0.0001             B   0.0735…

A: Identify the correct P-value for the given statement. The correct P-value is identified below :…

Q: Test the hypothesis that p1 < p2. Use α = 0.10. The sample statistics listed below are from…

A: Given information: n1 = 550, x1 = 121, and n2 = 690, x2 = 195  ,α = 0.10 we want to test the…

Q: A coin-operated drink machine was designed to discharge a mean of 9 ounces of coffee per cup.…

A: given data, A coin - oprated drink was designed to discharge  a μ=9claim:hypothesis test to see if…

Q: What should their null hypothesis be if they want to collect evidence against the manufacturer's…

A: Let p be the proportion of headphones that failed after two days. Let k represents the distribution…

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A:

Q: A is the value of a statistic that estimates the value of a parameter. ..... Complete the statement…

A:

Q: In a random sample of 40 brown-haired people, 22 indicated that they use hair coloring. In another…

A: Given : In a random sample of 40 brown-haired people, 22 indicated that they use hair coloring. In…

Q: Consider a hypothesis test about two proportions, Ho: pi = P2 versus Ha: P1 + P2. If the alternative…

A:

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: Given: t=1.608tα=1.594

Q: whether the standardized test statistic t indicates that you should reject the null hypothesis.…

A: Critical values are tcrit=-2.035 and 2.035

Q: Researchers in biology collected a sample of bees. They want to test if the average size of bees is…

A: Research in biology collected a sample of bees.They want to test if the average size of bees is…

Q: Suppose are running a study/poll about the proportion of men over 50 who regularly have their…

A: we have given that  sample size n=83  ,favorable cases x=76 ,population proportion=0.96

Q: The mean height of a certain kind of plant is 183 centimeters. Suppose we want to carry out a…

A: Given The mean height of a certain kind of plant is 183 centimeters,

Q: A researcher claims that 16% of individuals who take a particular type of drug will develop side…

A: From the provided information, Sample size (n) = 370 From which 72 developed side effects. Sample…

Q: 1-In a survey, 2700 internet users chose to respond to this question posted on a newspaper's…

A: The given study is the observational study as in the researcher just posted the question online and…

Q: A coin-operated drink machine was designed to discharge a mean of 6 ounces of coffee per cup.…

A: From the provided information, A coin-operated drink machine was designed to discharge a mean of 6…

Q: Using specific data, we find a significant difference in the proportion of fruit flies surviving…

A: From the provided information, p^o=0.45p^c=0.43SE=0.029α=0.05

Q: A toy manufacturer claims that the mean time that its top-selling toy captures children's attention…

A: Null Hypothesis: It is the opposite of the alternate hypothesis   Alternate Hypothesis: It is the…

Q: The t-statistic is computed as follows:   The p-value for t = 2.062 and 16 df is 0.0279 (from the…

A: Given information- Value of t-statistics = 2.062 Degree of freedom, df = 16 We have to find the…

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

A: The null hypothesis is the treatment has no effect on anxiety.

Q: For this study, we should use z test for a population proportion The null and alternative hypotheses…

A: As per our guidelines, we are allowed to answer first three sub-parts only. Thanks   Given :…

Q: State whether the standardized test statistic z indicates that you should reject the null…

A: For acceptance and rejection of the null hypothesis (H0) : The null hypothesis is accepted or…

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: From the given critical region as shown below that is t0=1.594 above which lies the critical region.…

Q: Suppose that a marketing researcher has been asked to determine if playing a new jingle on ice-cream…

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Q: State whether the standardized test statistic t indicates that you should reject the null…

A: Given: Critical value t0=1.546

Q: SSTR = 6,750 H0: μ1 = μ2 = μ3 = μ4 SSE = 8,000 Ha: At least one mean is different nT = 20   The…

A: From the given data:   Degree of freedom SS MSR=SS/Degree of freedom Between Treatment 4-1=3…

Q: Which of the following is true?

A: test statistics=Z= 2.69 hypothesis test H: p = 0.80  H: p &gt; 0.80