A survey on family-friendly housing inventory in Bowling Green is underway to estimate with a 95% confidence interval mean number of 3 bedroom homes for sale. Halfway through their survey, the city reduces the funding available and, consequently, the sample size (total number of houses) must be reduced. In doing so, the margin of error in their analysis will: A. increase, B. stay the same, C. become negative, D. decrease

Two teaching methods and their effects on science test scores are being reviewed.  A random sample of 11 students, taught in traditional lab sessions, had a mean test score of 76.4 with a standard deviation of 4.1 .  A random sample of 18 students, taught using interactive simulation software, had a mean test score of 82.2 with a standard deviation of 5.5 .  Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software?  Let μ1 be the mean test score for the students taught in traditional lab sessions and μ2 be the mean test score for students taught using interactive simulation software.  Use a significance level of α=0.1 for the test.  Assume that the population variances are equal and that the two populations are normally distributed. Step 1 of 4 :  State the null and alternative hypotheses for the test.

a news paper ad for a manager trainee position contained the statement "our manager trainee have a first year earnings average of $30000 to $40000.Do you think that the ad is describing a confidence interval

Two teaching methods and their effects on science test scores are being reviewed.  A random sample of 5 students, taught in traditional lab sessions, had a mean test score of 76.5 with a standard deviation of 3.3 .  A random sample of 11 students, taught using interactive simulation software, had a mean test score of 82.3 with a standard deviation of 4.6 .  Do these results support the claim that the mean science test score is lower for students taught in traditional lab sessions than it is for students taught using interactive simulation software?  Let μ1 be the mean test score for the students taught in traditional lab sessions and μ2 be the mean test score for students taught using interactive simulation software.  Use a significance level of α=0.05 for the test.  Assume that the population variances are equal and that the two populations are normally distributed. Step 3 of 4 :  Determine the decision rule for rejecting the null hypothesis H0 . Round your answer to three decimal…