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Hypothesis test for the difference between two means.
Grand Strand Family Medical Center is specifically set up to treat minor medical emergencies for visitors to the Myrtle Beach area. Ther are two facilities, one in the Little River Area and the other in Murrells Inlet. The Quality Assurance Department wishes to compare the mean waiting time for patients at the two locations. Samples of the waiting times, reported in minutes, follow:
Location
Waiting time
Little River
31.73
28.77
29.53
22.08
29.47
18.60
32.94
25.18
29.82
26.49
Murrells Inlet
22.93
23.92
26.92
27.20
26.44
25.62
30.61
29.44
23.09
23.10
26.69
22.31
Assume the population standard deviations are not the same. At the 0.05 significance level, is there a difference in the mean waiting time?
Suppose a t- test is being applied to find out if the population monthly expenditure mean is less than $212. The level of significance selected is 1% and 26 accounts are sampled. What is the critical value?
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With a standard deviation of 0.5. At a .05 significance level, can we conclude college students watch fewer videos per month than high school students?"
Create a 95% confidence interval for the value of the population mean, given that their are 64 observations and a sample mean of 49, with a sample standard deviation of 3,test the hypothesis with an alpha equal to .05
Teacher asked each of her students how many novels they had read in previous six months. Results are shown below. Create the frequency table for the number of novels read.
Jan finished culinary school and wants to start her own pastry business. She has a few options, and believes that a sensitivity analysis would help her to make the best business decision. She is considering three options, and is confident that..
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? State the null hypothesis and the alternate hypothesis.
Many states are carefully considering steps that would help them collect sales taxes on items purchased through the Internet.
A point Y is selected at random from interval (0,1). Then another point X is chosen at random from the interval (0,Y). Find probability density function for X.
Is this a one or two tailed test? (b) What is the decision rule? (c) What is the value of the test statistic? (d) What is your decision regarding H0? (e) What is the p-value? Please show me your calculations. Interpret the results.
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