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The null and alternative hypotheses of a t test for the mean are
H0: μ≥1,000H1: μ<1,000
Other things remaining the same, which of the following will result in an increase in the p-value?a. Increase in the sample size.
b. Increase in the sample mean.
c. Increase in the sample standard deviation.
d. Increase in α.
The n =10 patients had a mean decrease in IOP of = 15.2 mm Hg with a standard deviation of the 10 IOPs equal to s = 9.8 mm Hg after 15 weeks of using the drug. Determine the appropriate sample size for an a α = .01 test to have at most a .10 pr..
1. the length of time in minutes required to complete a series of physical therapy exercises is normally distributed
Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of 588 depressed individuals is selected and treated with Resithan, and 201 find relief from their depression.
The restaurant is open 16 hours each day and the daily expenses are 4500. Using a normal approximation, estimate the probability that on a given day, revenue will cover expenses.
In a survey about satisfaction with local phone service, those respondents who rated their current service as excellent and those who rated it Poor-Very Poor were asked to classify their current local service provider. The results are given in the..
someone wishes to design a lottery according to the following rules each ticket costs 5 there are three prizes 10 100
If the first head occurs on the first toss, you win $1. If the first head occurs on toss 2 or on toss 3 you win $2 or $3, respectively. If no heads appear, you lose $1 (that is, win -$1). Find the joint probability function for Y1 and Y2.
For each of the following tests concerning the autocorrelation parameter ρ in regression model (12.2) with three predictor variables. state the appropriate decision rule based on the
What is the probability that a randomly selected bag has between 1000 and 1200 chips? What is the probability that a randomly selected bag has fewer than 1000 chips?
analyze the monthly returns for freddie mac since august 1 1989.step 1 download the monthly returns for freddie mac
question the high temperatures for a random sample of 6 days in july are85nbspnbspnbspnbspnbspnbsp
Calculate a 3-month moving average forecast for months 4 through 9 also Compare the two forecasts by utilizing MAD. Which forecast appears to be more accurate.
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