Question

Paste B tra C Merge Center Conditional Format Cell Formatting as Table Styles H31 A E F G H 21 22 23 B с D At a 98.96% LC, is their theory correct Ho: u 50 H: u <50 Z- Not Rejected -2.27 -2.31 Ho is Conluusion: Z 24 25 26 27 28 29 3. The PA Assn of Brewers is attempting to confirm their research, at an LC of 93.7%, which theorizes that IUP has replaced PSU as the biggest party school in PA. PSU's average was 70 parties per week. A recent sample of 100 IUP students revealed a mean of 72 parties with a known to be 12. WII IUP take over the top spot? Ho: Ho is H: Z Conluusion: Z 30 31 32 33 4. How does the level of confidence relate to the level of significance? 34 35 36 37 38 39 40 Assignment Chapter 10 In these problems, an incorrect conclusion represents 50% of the problem's value. For Exercises 2 and 4, answer the questions: (b) What is the decision rule? (e) What is the value of the test statistie? (d) Accept or Reject 1.? (e) Your conclusion, Hot H10 41 Exercise 24 Sheet1 Sheet2 Test the following hwnthesis Sheet3 + Ready US 30 MacBook Air

Answer 1

3]Null and Alternative Hypotheses

The following null and alternative hypotheses need to be tested:

Ho: μ=70

Ha: μ≠70

This corresponds to a two-tailed test, for which a z-test for one mean, with known population standard deviation will be used.

Rejection Region: Based on the information provided, the significance level is α=0.063, and the critical value for a two-tailed test is zc=1.86.

The rejection region for this two-tailed test is R={z:∣z∣>1.86}

(3) Test Statistics

The z-statistic is computed as follows:

X - μo 2 = 72 - 70 12/V100 1.667 σ/νη

Decision about the null hypothesis

Since it is observed that ∣z∣=1.667≤zc​=1.86, it is then concluded that the null hypothesis is not rejected.

Using the P-value approach: The p-value p=0.0956, and since p=0.0956≥0.063, it is concluded that the null hypothesis is not rejected.

Conclusion: It is concluded that the null hypothesis Ho is not rejected. Therefore, there is not enough evidence to claim that the population mean μ is different than 70, at the 0.063 significance level.

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