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A marketing research firm suspects that a particular product has higher name recognition among college graduates than among high school graduates. A sample from each population is selected, and each asked if they have heard of the product in question. A summary of the sample sizes and number of each group answering ''yes'' are given below: College Grads (Pop. 1):High School Grads (Pop. 2):n1=99,n2=100,x1=71,x2=51 Is there evidence, at an α=0.073 level of significance, to support the claim of higher name recognition among college graduates? Carry out an appropriate hypothesis test, filling in the information requested. A. The value of the standardized test statistic: B. The p-value is
The National Center for Education Statistics reported that 47% of college students work to pay for tuition and living expenses. Assume that a sample of 450 college students was used in the study.
Machine which fills quart milk cartons is set up to average 32.2 oz per carton, with standard deviation of 1.2 oz. Determine probability that filled carton will contain less than 32 oz of milk?
The probability of Toyota building a new production plant is 70% and the probability of GM building a new one is 50%. The following are the probabilities associated with the countries Toyota would build a new plant:
The population variances are 4.6 and 5.0 respectively. Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades?
People with MBAs often get promoted faster than people without the degree. Prepare a 92% confidence interval estimate for the population proportion.
As a way of fund raising, you decide to set up a hot dog stand, after a few weeks of doing this you sell 8 hot dogs every 10 minutes.
If computing a causal linear regression model of y = a + bX and the resultant r2 is very near zero, then one would be able to conclude that:
While 290 out of 400 in Batavia preferred the same flavor. To test the hypothesis that there was no difference in preferences in the two towns, what is the alternate hypothesis?
Joe received a z score of -1.50 on a classroom test. This means that, compared to his classmates, Joe's score was...?
Currently, quarters have weights that are normally distributed with a mean of 5.670 g and a standard deviation of 0.062 g. A vending machine is configured to accept only those quarters with weights between 5.550 g and 5.790 g.
the over $50,000 income range did not own a dishwasher. If one household is randomly selected from each income group. Determine the probability that neither household will own a dishwasher.
In the past, only 5% of these diskettes have had bad sectors. If the company wishes to set 99.7% control limits based on samples of size 500, what would these limits be?
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