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Sample Size for Motor Vehicle Ownership: You have been hired by the Ford Motor Company to do market research, and you must estimate the percentage of household in which a vehicle is owned. How many households must you survey is you want to be 94% confident that your sample percentage has a margin of error of three percentage points?
a) Assume that a previous study suggested that vehicles are owned in 86% of households.P= .86, q= .14, n= 473Thus, there are about 473 households must be survey.b) Assume that there is no available information that can be used to estimate the percentage of households in which a vehicle is owned.
I need to collect both primary and secondary data regarding the research issue on salary of baseball players. (the aim of this research is to verify whether the salary of the baseball players varies with respect to the state)
The analysis produces SS(within treatments) = 32, SS(between treatments) = 40, and SS(total) = 72. For this analysis, what is the MS(within treatments)?
Compute the two weights that give the cutoff points for the three categories.
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
Roger has read a report that the weights of adult mail Siberian tigers have a distribution which is approximately normal with mean μ = 390 lb and σ = 65 lb
At the time she was hired as a server, beth was told, "you can average more than $20 a day in tips." Over the first 35 days she was employed at the resturant, the mean daily amount of her tips was $24.85, with a standard deviation of $3.24.
Your office has just received 128 insurance claims to be processed in the next few days. What is the probability that half or more of the claims have been padded?
We would like to test if the proportion of respondents that support the health care bill is less than 50% (a) what kind of hypothesis test is appropriate?
At the 0.05 significance level, can he conclude that number of absences has declined? calculate approximately the p -value.
Given that he makes first, assume probability that he makes second is 0.60. Given that he misses first, assume probability that he makes second one is 0.40.
Consider a machine that fills soda bottles. The process has a mean of 15.9 ounces and a standard deviation of 0.06 ounces. The specification limits are set between 15.8 and 16.2 ounces. a) Compute and interpret the machine's Cp
It is estimated that 10 percent of those taking the quantitative methods portion of the CPA examination fail that section. Sixty students are taking the exam on Saturday.
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