Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance a, and sample size n. Two-tailed test, a = 0.02, n= 23 Click the icon to view the t-distribution table. The critical value(s) is/are (Round to the nearest thousandth as needed. Use a comma to separate answers as needed.)

The number of successes and the sample size are given for a simple random sample from a population. Determine the sample proportion, p x = 20, n = 25 O a Ob O c Od A P A P P A P = 0.6 = 0.8 = 0.72 = 0.86

Find the margin of error for the given values of c, s, and n. c=0.80, s = 6, n = 10 Click the icon to view the t-distribution table. The margin of error is (Round to three decimal places as needed.)

Scores of 5 students before and after a special coaching program are given as follows. (Check image) At the 5 percent level of significance, does the special coaching benefit students in that students are higher after coaching? Report the p-value for the test.

Use the standard normal table to find the z-score that corresponds tot the given percentile. If the area is not on the table, use the entry closest to the area. If the area is halfway between two entries, use the z-score halfway between the corresponding z-scores. P 95

Weights​ (kg) of poplar trees were obtained from trees planted in a rich and moist region. The trees were given different treatments identified in the accompanying table. Use a 0.05 significance level to test the claim that the four treatment categories yield poplar trees with the same mean weight. Is there a treatment that appears to be most​ effective?   LOADING... Click the icon to view the data table of the poplar weights. No Treatment Fertilizer Irrigation Fertilizer and Irrigation   1.24 0.99 0.09 0.93   0.65 0.94 0.63 1.41   0.41 0.55 0.13 1.06   0.15 0.51 0.88 1.49   1.31 1.01 0.84         Determine the null and alternative hypotheses.   H0​: ▼   mu 1 greater than mu 2 greater than mu 3 greater than mu 4μ1>μ2>μ3>μ4 Exactly two of the population means are equal.Exactly two of the population means are equal. Not all of the population means are equal.Not all of the population means…

Use the standard normal table to find the​ z-score that corresponds to the given percentile. If the area is not in the​ table, use the entry closest to the area. If the area is halfway between two​ entries, use the​ z-score halfway between the corresponding​ z-scores. If​ convenient, use technology to find the​ z-score.   P65

You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 1.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. n= (Round up to the nearest integer.) nter corr

S Use the sample data and confidence level given below to complete parts (a) through (d). A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n = 998 and x = 522 who said "yes." Use a 99% confide Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) n example Get more help -

SAT Writing scores are distributed in population with μ = 487 and o = 115. Describe the sampling distribution of sample mean (the shape, mean, and standard error) for n = 64. Normal; 487; 14.38 Normal; 487; 115 Normal; 487; 1.80 Uniform; 487; 115