Which of the following is false regarding the sampling distribution in null hypothesis testing?

9 Next TWO questions are related to the following sample data: Jane, a statistics student, wants to build a confidence interval with a 95% confidence level for the mean commuting distance of all IUPUI students. She selects a random sample of students and obtains the following commuting distance data. The data show the distance from the student residence to the campus in miles). b C d 11 b 8:19 1 d Done 12 8.6 23 8.3 9.1 22.6 8.2 14 12.3 14.9 9.4 16.5 12.7 14.9 0.395 0.359 0.326 19 48 10.2 10.7 4.7 14.4 20.1 28.5 29.6 18 7.5 13.1 16 12.4 17.3 16.7 11.9 61 71 83 97 The standard error of the mean is, 0.434 14.93 14.59 E270 T5 Armour, Tori.xlsx 14.24 13.67 29 38 31 39 10.8 20.9 13.5 17.9 11.1 35.4 34.1 33.0 31.9 13 13.2 10.1 14.1 12.6 11.5 12.2 13.2 14.7 19.7 19.3 38 26 30 12.9 14.7 17.4 13.1 12.8 10.9 10.3 21.2 7.6 8.2 The confidence interval with a 95% confidence level is 26.1 27.4 10 The interval estimate is, 11.83 12.18 12.52 13.10 Next two questions are related to the following sample…

S - A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA. Ho: H₁ = 42₂ H₁: Hy > H₂ @ View an example Get more help. 2 C. Ho: H₁ = 4₂ H₁: Hy #4₂ The test statistic, t, is -1.32. (Round to two decimal places as needed.) The P-value is (Round to three decimal places as needed.) W S X command # 3 80 F3 E D с $ 4 a FA R F % 5 V FS T G 6 B MacBook Air & FG Y H & 7 N 8 41 F7 U J OB. Ho: 2 Η.: μη Σμη OD. Ho: H₁ H₂ H₁ H₁ H₂ * 8 M DII FO I ( 9 K DD F9 O < I ) O L command 4 F10 P . - : t ; Clear all option F11 { [ + ? 1 = 3CX5 Treatment Placebo H₂ 35 an Check answer…

Suppose you conduct a study using an independent-measures research design, and you intend to use the independent-measures t test to test whether the means of the two independent populations are the same. The following is a table of the information you gather. Fill in any missing values. Sample Degrees of Sample Standard Sums of Size Freedom Mean Deviation Squares Sample 1 ni 11 df1 = 10 M1 = 4.5 S1 = 5.4 Sample 2 n2 = 21 df2 = 20 M2 = 3.6 SS2 1,248.2 The pooled variance for your study is (Note: You are being asked for this value to three decimal places, because you will need to use it in succeeding calculations. For the most accurate results, retain these three decimal places throughout the calculations.) The estimated standard error of M1 - M2 for your study is The t statistic for your independent-measures t test, when the null hypothesis is that the two population means are the same, is The degrees of freedom for this t statistic is

4.A prior study(by Pew Research 2021)found that 35 out of 50 randomly selected US adults between the ages of 18 to 29 use (or have used) Instagram. Construct a 99% confidence interval for the population proportion of US adults between the ages of 18 to 29 use (or have used) Instagram. (round to three decimal places)   a.Identify the following: X, N, P   b.Which distribution should you use for this problem?   c.What is the corresponding critical value for a 99% confidence interval?     d.Calculate the margin of error (3 decimal places)   e.Construct a 99% confidence interval f. Interpret the interval.

With the information provided, determine which hypothesis test is required, and per- form it as asked. A frequency table for two categorical variables X and Y, each with two levels, a = 0.05 significance level? given below. Is there evidence of a relationship between them at the X1 X2 Y1 101 81 Y2 35 52 (a) What are Ho and HA? (b) What is the relevant test statistic and its sampling distribution under the null hypothesis? (c) Calculate the test statistic and provide the value. Show working. (d) Using your preferred method (RoR, p-value, CI) make a determination about the hypothesis test.

I'm completly lost on the problem. Can you please help me. I'm confused om P and P

I 4. The numbers below represent the weekly time (in hours) that a random sample of college football players spent lifting weights. 7.4, 5.8, 7.3, 7, 8.9, 9.4, 8.3, 9.3, 6.9, 7.5, 9, 5.8, 5.5, 8.6, 9.3, 3.8 a. Construct, by hand, a 99% confidence interval of the mean weekly time college football players spend lifting weights. b. Interpret your confidence interval in context of the problem.

II wu.aleks.com A Students Home 6McGraw Hill Campus A ALEKS-Anna Bergstr... Untitled O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for the population mean: t test using the critical... SAC A Du A coin-operated drink machine was designed to discharge a mean of 6 fluid ounces of coffee per cup. In a test of the machine, the discharge amounts in 22 randomly chosen cups of coffee from the machine were recorded. The sample mean and sample standard deviation were 5.88 fluid ounces and 0.24 fluid ounces, respectively. Españot If we assume that the discharge amounts are approximately normally distributed, is there enough evidence, to conclude that the population mean discharge, u, differs from 6 fluid ounces? Use the 0.10 level of significance. Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis H and the alternative hypothesis H.…

You are deciding whether to employ a z procedure or a t procedure to test hypotheses about the mean of a population using a significance level of 0.05 for a sample size of 50. Which of the following statements is correct?   Question 17 options:   You should not use the t procedure, because the population does not have a Normal distribution.   You may use the z procedure, but only if you use the sample standard deviation.   You may not use the z procedure because you know the population standard deviation.   You should use the t procedure, provided you do not know the population standard deviation.