Question: NEED HELP ASAP!!!! 1. State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain. (a) t= 2.201 (b) t=0

NEED HELP ASAP!!!!

1.State whether the standardized test statistic t indicates that you should reject the null hypothesis. Explain.

(a) t=2.201

(b) t=0

(d) t2.237

(*****t0 on the graph is positioned to the left at -2.108****)

2.In a survey of 628 males ages 18-64, 393 say they have gone to the dentist in the past year.

Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.

3.In a random sample of 21 people, the mean commute time to work was 31.8 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean . What is the margin of error of m?

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