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Company A makes a large shipment to Company B. Company B can reject the shipment if they can conclude that the proportion of defective items in the shipment is larger than 0.1. In a sample of 400 items from the shipment, Company B finds that 47 are defective. Conduct the appropriate hypothesis test for Company B using a 0.1 level of significance.
What is the test statistic? Give your answer to four decimal places.
What is the critical point for the test? Give your answer to four decimal places.
Find the probability that a randomly selected x-value from the distribution is in the given interval. Between 29 and 37.
15 are ink jet printers. if a group of 10 printers is chosen at random from the store, find the mean and variance of the number of ink jet printers.
ifteen watch springs are selected from the production line and measured; their weights are 8, 3, 4, 8, 1, 4, 4, 9, 9, 2, 8, 4, 9, 7, and 7 grams. Assume = 0.01.Determine which test statistic is appropriate (chi-square or F), and calculate its value..
suppose that you are trying to estimate average iq and its standard deviation. you know that iqs are distributed
a population of 1000 voters contains 330 republicans 620 democrats and 50 independents and members of other parties. a
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
If garage is robbed, determine the probability doors were left open?
you play two games against an opponent. the probability you win the first game is 0.7. if you win the first game the
De acuerdo con la Agencia Seguros de un Estado, una familia de 4 miembros gasta entre 400 y 3800 dólares anuales en toda clase de seguros. Sunponga que el dinero que se gasta tiene una distribución uniforme.
you start with scatterplots and correlation before regression; scatterplots need to be much more refined to be of use; so, you have a relationship - how much of the variation does the model explain and what are the practical conclusions?
Describing the results of a hypothesis test of two populations or more than two populations. Include the following: Perform the five-step hypothesis test on data pertaining to your selection.
An investment broker reports that the yearly returns on common stocks are approximately normally distributed with a mean return of 12.4 percent and a standard deviation of 20.6 percent.
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