In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the p-value would have been:

Q: Find the value of t a/2 for a 99% confidence interval when the sample size is 30

A: Given Confidence = 99% n=30

Q: A researcher develops a new drug to treat stress but she isn't sure what kind of effect it will have…

A:

Q: It was found that in a sample of 90 teenage boys, 70% of them have received speeding tickets. What…

A:

Q: Use a t table to find the value of t to use in a confidence interval?

A: Note: you did not mention the information about the sample, for which t-value is to be obtained. So,…

Q: In a random sample of 810 women employees, it is found that 81 would prefer working for a female…

A:

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: i want Z

A: The known values are, x = 328 n = 1160 The sample proportion is,

Q: Resenhoeft, Villo, and Wiseman (2008) conducted a study showing that a woman shown in a photograph…

A: Given, n = 12

Q: a recent study of 100 people in Burlingame found that 19 were obese.  Find the 90% confidence…

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Q: The. Nielsen television ratings used a random sample of 2,000 homes and found that 45% of the homes…

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Q: For a two-tailed test, a sample size of 21 at 80% confidence, t= 1.323 2.539 1.325 2.528

A: We have to find correct option..

Q: A sample of n - 16 scores is obtained from a population with u = 50 and o - 16. If the sample mean…

A:

Q: In a​ poll, 6969​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Obtain the value of the minimum number of surveyed people. The value of the minimum number of…

Q: To test whether the mean of a population is greater than 20, the appropriate null hypothesis is that…

A:

Q: A marketing researcher for a phone company conducteda survey of 500 people and then constructed a…

A: Given: Survey of 500 people has been conducted to know the proportion of customers that are likely…

Q: If a sample of n = 4 scores is obtained from a normal population with µ = 70 and σ = 12, what is the…

A: Sample size, n = 4 Mean = 70 Standard deviation = 12 Sample mean = 69 (Raw score)

Q: In a previous poll, 39% of adults with children under the age of 18 reported that their family ate…

A: We have to test the claim that the proportion of families with children under the age of 18 who eat…

Q: Days before a presidential election, an article based on a nationwide random sample of registered…

A: Given Information:  Percentage of registered voters = 52% ± 3%

Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: Which of the following are two-tailed tests? O Ho: H = 10 versus H1: µ # 10 Ο Η: μ 0 O Ho: H > 400…

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Q: In a previous poll, 34% of adults with children under the age of 18 reported that their family ate…

A: We have to find given hypotgesis.

Q: An independent-measures study is analyzed using the appropriate t-test, and the APA summary is t(56)…

A: Introduction: Denote μ1, μ2 as the true population means for the two groups being compared.

Q: Dylan wants to determine a 99 percent confidence interval for the true proportion p of high school…

A:

Q: d. Construct a 95% confidence interval estimate. How does this change your answer to part (b)?

A: Given that Sample size n = 50 Sample mean = 0.987 Population SD = 0.02 The critical value of Z at…

Q: An independent-measures experiment with three treatment conditions has a sample of n = 10 scores in…

A: Given: An independent measures having n=10 scores in which the conditions are T1 = T2 = T3. To…

Q: A reşearcher hears a study report that 30 percent of Americans are obese, and he wants to test that…

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Q: (c) In a random sample of visitors to a famous tourist attraction, 252 of 750 American tourists and…

A: We have given that,  X1 = 252, n1 = 750 and X2 = 312, n2 = 500 Then,  We will find 96% confidence…

Q: Give the margin of error for the 90% confidence interval for µd = µ1 – H2

A: The differences are 4, 6, 2. The mean is, d¯=∑dn=4+6+23=123=4 The standard deviation is,…

Q: A manufacturer of potato chips would like to know whether its bag filling mac underfilling the bags.…

A: we are given that  mean = 414gms variance = 169 n = 50  we need to test if the machine is…

Q: A researcher administers a new treatment to a sample of participants selected from a population with…

A: According to the provided information, a sample of participants selected from a population with µ =…

Q: A random sample of 12 students showed the following time (in hours) of sleep 4.5 5 5.5 6 6 7 7.5 7.5…

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Q: 1(c). Construct a 99% confidence interval for the true proportion of people who liked the chocolate…

A: here use given data table

Q: In a poll conducted, 439 of 1007 adults in a certain country polled said they were "picky eaters."…

A: a. The proportion of the respondents said they were picky eaters is, p^=xn=4391007=0.4359≈0.44 Thus,…

Q: is: n=217, x 26.5 hg, s= 6.1 hg. Construct a confidence interval estimate of the mean. Use a 99%…

A: Given that  Sample size(n) = 217 sample mean (x¯) = 26.5 Sample standard deviation (s) = 6.1…

Q: In a sample with M = 40 and s = 8, what is the z-score corresponding to X = 38? %3D

A: Solution: 7. From the given information, M=40 and s=8.

Q: Give a 95% confidence interval for the true mean time students spent practicing for the play.…

A: Given,   Sample size = 120 Sample mean = 45.6 Sample standard deviation = 13.3   Since the…

Q: If there are 4 scores per group and the t value is 2.34, what is the p value for a two-tailed test…

A: Note: Thank you for the question. Since it is given that, there are 4 scores per group we are…

Q: Suppose researchers perform a two-tailed study and the following results are obtained. α=0.05 t=2.44…

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Q: In a previous poll, 30% of adults with children under the age of 18 reported that their family ate…

A:

Q: A researcher conducts a study comparing two treatments and reports the t statistic as t(25) = 2.10.…

A: Given : t(25) = 2.10  Degrees of freedom = 25  n1 and n2 be the null hypothesis

Q: For each of the tests, what would be the conclusion if the test were carried out using the α = 0.05…

A: From the provided information, Sample size (n) = 36 Sample mean (x̄) = 117.0 Population standard…

Q: Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better…

A:

Q: Consider a two-tailed test with a level of confidence of 84.90%. The z-value is _______. 2.88 1.44…

A: From the provided information, Confidence level = 84.90% The test is two tailed.

Q: For a sample with a mean of 10, a std of 5 and an n of 30, what is the lower bound of the 95%…

A: Given data, x=10σ=5n=30z-value at 95% confidence is Zc=1.96

Q: An independent-measures research study uses two samples, each with n = 15 participants. If the data…

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Q: A statistics student wants to conduct a study to determine the proportion of workers in Cititon who…

A:

Q: Set up the null and alternate hypotheses to test whether the population mean is equal to 10 when you…

A: The Null hypothesis is  Ho: μ=10

Q: A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,…

A: Given, The sample proportion is,

Q: The claim is that for a smartphone​ carrier's data speeds at​ airports, the mean is μ=11.00 Mbps.…

A: Consider that μ defines the population mean smartphone carrier’s data speed at airport.   Null…