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10-13.. Consider the hypothesis test H0 : μι Ma against , : μ.< μ2. Suppose that sample sizes n-15 and n-15, that 7.2 and x2-7.9, and that si 4 and s 6.25. Assume that σ-σ and that the data are drawn from normal distribu- tions. Use α 0.05 (a) Test the hypothesis and find the P-value (b) Explain how the test could be conducted with a confidence interval. than μ2? be used to obtain B 0.05 if u, is 2.5...
1. Consider the hypothesis test Ho:ui= u2 against Hi: 417 42. Suppose that sample sizes are n1 = 13, N2 = 10 X1=4.7, x2=6.8, s1=2 and S2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (b) Complete the steps i. through to test the hypothesis stated in number 1 using a = 0.05 and the fact that the populations variances can be assumed to be equal. Ho: Mi= H2 Hj: Mit up i. Test Statistic:...
1. Consider the hypothesis test Ho: u1=p2 against H1: u 17 M2. Suppose that sample sizes are n1 = 13, n2 = 10 x1=4.7, x2 =6.8, s1= 2 and s2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (a) Confirm that it is reasonable to assume 01 2 = 022 by completing the steps i. through v. below. Use a = 0.05. HO: 01 2 = 02 20:01 2 * 022 i. Test Statistic ii....
1. Consider the hypothesis test Ho: M1= H2 against Hj: Mit u2. Suppose that sample sizes are ni = 13, N2 = 10 ži=4.7, X2 =6.8, S1=2 and s2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (a) Confirm that it is reasonable to assume o = ož by completing the steps i. through v. below. Use a = 0.05. Ho: 01 = ož Họ: 0 + 03 i. Test Statistic: ii. Rejection Criterion: iii....
1. Consider the hypothesis test Ho: Mi=u2 against Hj: uit U2. Suppose that sample sizes are ni = 13, n2 = 10 #1=4.7, X 2 =6.8, s1=2 and s2 =2.5. Assume that the data are randomly drawn from two independent Normal distributions (a) Confirm that it is reasonable to assume o? = ož by completing the steps i. through v. below. Use a = 0.05. Ho: 0 = ož Ho: 02 i. Test Statistic: ü. Rejection Criterion: iii. Decision (reject...
how do i calculate the t statistic?
Assume we know the following for a two-tailed, single-sample / test at p level of 0.05 for the starting salaries of recent college graduates in Texas: u=$48,400, N-117, M=$47,375, S-$4400 a. b. a. b. Calculate the t statistic Calculate a 95% confidence interval.
View Policies Current Attempt in Progress Consider the hypothesis test HO:P1 = 2 against H 1:21 > 2. Suppose that sample sizes aren 1 - 15 and n 2 - 15 thatx 1 - 7.7 and x 2 = 5.7 and thats 12-4 and s 22 - 9. Assume that o 12 = 0 2 2 and that the data are drawn from normal distributions. Use a -0.05. (a) Test the hypothesis and find the P-value. (b) What is the...
The numbers of successes and the sample sizes for independent simple random samples from two populations are provided for a two-tailed test and a 95% confidence interval. Complete parts (a) through (d). Xy = 21, n = 60, X2 = 22, n2 = 100, a = 0.05 Click here to view a table of areas under the standard normal curve for negative values of Click here to view a table of areas under the standard normal curve for RoSive values...
Suppose that (Yį, X;) satisfy the assumptions SLR.1 - SLR.4. A random sample of size n = 250 is drawn and yields Y = 5.4+3.2X, n = 250, R2 = 0.26. (3.1) (1.5) (a) Test Ho: B1 = 0 against H :B1 + 0 at the significance level 5%. (b) Construct a 95% confidence interval for B1. (c) Suppose you learned that Y; and X; were independent. Would you be surprised? Explain. (d) Suppose thet Y; and X, are independent...
hi there, having trouble with stats homework
In a random sample of 22 people, the mean commute time to work was 31.5 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval fo the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is ( 29.4, 33.6) (Round to one decimal place as...