In the context of a one-sample t-test, what is the estimated standard error, sm, for a sample size of n = 16 with s2 = 36? Group of answer choices 0.67 0.61 1.5 2.25

Use technology to help you test the claim about the population mean, , at the given level of significance, a, using the given sample statistics. Assume the population is normally distributed. Claim: u> 1240; a = 0.09; o = 208.13. Sample statistics: x= 1267.96, n= 300 O E. Ho: us 1267.96 O F. Ho µ> 1267.96 Ha p> 1267.96 Ha µs 1267.96 Calculate the standardized test statistic. The standardized test statistic is (Round to two decimal places as needed.) Determine the P-value. P = (Round to three decimal places as needed.) Determine the outcome and conclusion of the test. V Ho. At the 9% significance level, there V enough evidence to the claim.

Pick the Test (Z-test, Single Sample T-test, Independent Sample T-test, Paired Sample Ttest, ANOVA):   9. You are studying procrastination on your campus and find a measure with good norms for college students ( = 4.37; = .89). You test whether your sample mean on this measure is different from the general college population. Which of the following statistics would you use for your test? Test: ___________

Pick the Test (Z-test, Single Sample T-test, Independent Sample T-test, Paired Sample Ttest, ANOVA):   19. You are studying procrastination on your campus and find a measure with good norms for college students ( = 4.37; = .89). You test whether your sample mean on this measure is different from the general college population. Which of the following statistics would you use for your test? Test: _____________________

The accompanying data table lists the magnitudes of 50 earthquakes measured on the Richter scale. Test the claim that the population of earthquakes has a mean magnitude greater than 1.00. Use a 0.01 significance level. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, and conclusion for the test. Assume this is a simple random sample Magnitude of Earthquake    0.720 0.740 0.640 0.390 0.700 2.200 1.980 0.640 1.220 0.200 1.640 1.320 2.950 0.900 1.760 1.010 1.260 0.000 0.650 1.460 1.620 1.830 0.990 1.560 0.410 1.280 0.830 1.320 0.540 1.250 0.920 1.000 0.780 0.790 1.440 1.000 2.240 2.500 1.790

Which store do you think is more expensive—physical or online? A recent survey found that 45% of people aged 20 to 40 thought that physical stores were more expensive. To conduct a follow-up study that would provide 95% confidence that the point estimate is correct to within 0.05 of the population proportion, how many people aged 20 to 40 need to be sampled? (PHStat) To conduct a follow-up study that would provide 99% confidence that the point estimate is correct to within 0.05 of the population proportion, how many people aged 20 to 40 need to be sampled? (PHStat) Compare the results of (a) and (b).

What does the t test for the difference between the means of 2 independent populations​ assume?   A. The sample sizes are equal.   B. The sample variances are equal.   C. The populations are approximately normal.   D. All of the above

Find the sample​ size, n, needed to estimate the percentage of adults who have consulted fortune tellers. Use a 0.09 margin of​ error, use a confidence level of 98​%, and use results from a prior poll suggesting that 18​% of adults have consulted fortune tellers. n=

Find the standardized test statistic, z, to test the hypothesis that p, p,. Use a = 0.02. The sample statistics listed below are from independent samples. Round to three decimal places. Sample statistics: n, = 1000, x, = 250, and n, = 1200, X2 = 195 O A. 3.212 O B. 2.798 O C. 5.087 O D. 4.761 Click to select your answer. 02/16/21 ch 2.3 Homework (99+ 000000 eesitphotoc