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Q1) Bide-a-While efficiency hotel, which caters to business workers who remain for extended periods of time (weeks or months), offers room service. Marketing director is interested in trying to find out whether or not she can advertise "room service in under 30 minutes, or order is free". You will be asked to recognize how many delivery times she must sample to evaluate true mean delivery time to within 5 minutes at 90% reliability level? Suppose that standard deviation for delivery times is 18.2 minutes.
Q2) According to new poll, 16.2% of credit cardholders in United States shave used their credit card to create a purchase on internet. You will be asked to recognize how large sample must be taken if true proportion is to be evaluated to within 1.5% at 95% reliability level? You may use sample proportion in computations of the sample size.
Investigate the cost of a home mortgage and to determine the monthly payment.
Plot stem-and-leaf plot and boxplot for Mtotal. Illustrate hand calculation of median location and upper hinge location of boxplot, and determine their corresponding data values.
What is the approximate permutation test P-value and What is the permutation test P-value for testing the equality of the means versus the hypothesis that the mean change for the treatment group is larger than the mean treatment for the control gro..
the maximum point total for the quarter was 200. The point totals for the 10 students are given in the stemplot below. For the density curve displayed below, which of the following is true?
Determine the average and the variation for Brand 1 price, sales market share, and total revenue, using the weekly market survey data (descriptive statistics).
Test hypothesis that mean weight of 2 sheets are equal against alternative that they are not(suppose equal variances). Use α=0.05 and suppose equal variances. Determine the P value.
Sample data recently collected indicate that Dough Boy's crusts average 30 centimeter in diameter, with a standard deviation of 1.1 centimeters.
A major benefit of two-way ANOVA over several one-way ANOVAs, If an F test for interaction is significant.
A simple random sample of 1000 Americans found that 61% were satisfied with the service provided by the dealer from which they bought their car.
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30.
Which statement is true for a statistical study?
We have a deck of 52 playing cards. What is the probability of drawing?
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