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A major dvd rental chain is considering opening a new store in an area that currently does not have any such stores. The chain will open if there is evidence that more than 5,000 of the 20,000 households in the area are equipped with dvd players. It conducts a telephone poll of 300 randomly selected households in the area and finds that 100 have dvd players. state the p-vaule of the test
Construct 90% and 95 % confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals.
A local ice-cream store receives an average of 3 customers per hour. Assume that the arrival events are well described by Poisson distribution. The cashier wants to leave the store to run an errand. The manager computes the expected time T between..
problem1 the data below shows the number of absences x and the final grade y of seven students in the statistics
State a hypothesis.
Find the cumulative distribution function
Calculate the expected value, variance, and standard deviation of the total income
In a survey of 900 college students , 405 out of 900 students has credit card or 45% of the student owned a credit card.
Consider a sample of 148 small businesses. During a three-year period, 15 of 106 headed by men and 7 of the 42 headed by women failed. Let p1 be the proportion of businesses headed by women that failed. Let p2 be the proportion of businesse..
According to a recent newspaper report the average starting salary for recent graduates in Electrical Engineering is at least $62,450.The Placement Director at Supreme State University would like to test the accuracy of the newspaper report. Th..
What is the probability that the average amount dispensed in a random sample of size 10 is at least 204 milliliters - What is the probability that less than four correct answers in quiz 2?
The symmetric approximation and Monte Carlo risk approaches
statistics1 an electronics company is about to launch a new product. if the serial number for eachnbsp piece produced
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