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? Secure I https:// www.matha.com/student naye 'omewor K. MATH1080-02 SM2018 Melia Murray &1 6/30/18 11:51 AM Homework: OHW5 Score: 0 of 3 pts 8.3.4 Save I5 of 18 (6 complete)? Hw Score: 216%, 15330f 71 pts Question Help * Twelve different video games showing violence were observed. The duration times of violence were recorded, with the limes sample data are used with a 0.01 significance level in a test of the claim be used for testing that claim, what confidence level should be used fot a should we conclude about the claim? (secondsj listed below Assume that these that the population mean is greater than 90 sec. If we want to construct a confidence interval to confidence interval? If the confidence interval is found to be -362 sec cpc248.4 sec, what 88 15 559 53 0 59 210 40 191 0 256 The confidence level should be (Type an integer or a decimal. Do not round) RTS sEnter your answer in the answer box and then cick Check Answer part remaining DI AV re to search

Explanation / Answer

Here we have to test the hypothesis that,

H0 : mu = 90 sec Vs H1 : mu > 90 sec

where mu is population mean duration time of vielence.

Assume alpha = level of significance = 0.01

Now for constructing confidence interval we need confidence level = 1 - 0.01 = 0.99 or 99%.

We will find confidence level by using level of significance.

Confidence level = 1-level of significance

Now we have given confidence interval is ( -36.2 sec, 248.4 sec)

Population mean = 90 sec lies in the confidence interval therefore accept H0 at 1% level of significance.

Conclusion : There is not sufficient evidence to say that the population mean is greator than 90 sec.

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