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Sample 80 autos, 33 autos sold to 25-40 age group, 47 autos sold to over 40 age group, can we conclude at .05 level of signifinance that the proportion p1 of all imported autos sold to 25-40 age group is greater than or equal to the proportion p2 of imported autos sold to over 40 age group?
A health care analyst would like to know that if the duration of a given eye surgical procedure has a normal distribution with a mean of 240 minutes and a standard deviation of 40 minutes
You have $380,000 in your bank account. The interest rate in your account is 5%. Solve for the following showing your work: How much interest will you accumulate if interest is compounded annually over the next five years?
What is the sample proportion from an American Express sponsored survey that found 355 of 546 business travelers use a laptop computer on overnight business trips?
Draw frequency polygons for each of the four distributions (assume they are normal) with the raw scores indicated for all six of the standard deviation units. a) Mean= 15 SD= 3
The standard deviation of test scores on a certain achievement test is 11.4. A random sample of 100 scores on this test had a mean of 71.2. Based on this sample, find a 90% confidence interval for the true mean of all scores. Complete the below:
the flavor of gum that is purchased. Determine the test value for the data given type number sold spearmint 25 wintergreen 32 cherry 18 cinnamon 43.
Please use synthetic division and the remainder theorem to find the indicated function values:
Continuous random variable is uniformly distributed between a and b. The probability density function between a and b is.
SAT verbal scores are normally distributed with a mean of 423 and a standard deviation of 91. Use the Empirical Rule to determine what percent of the scores lies between 423 and 514.
The 95% confidence interval for the mean of the sampling distribution of the mean is about:
A biased coin with probability of head being .6 is tossed 12 times. What is the probability that number of head would more than 4 but less than or equal to 10.
Estimated sales resulting from a $15,000 investment in inventory and an advertising budget of $10,000. Interpret b1 and b2 in this estimated regression equation.
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