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A market survey was conducted to estimate the proportion of homemakers who would recognize the brand name of a cleanser based on the shape and color of the container. Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name.
Compute the standard error of the proportion.
Compute the mean of the sampling distribution? Compute the standard deviation of sampling distribution?
Determine the following areas under standard Normal distribution curve.
If you have a statistical package that computes binomial probabilities, find the probability that at least five funds outperform the market in all 10 years.
Find the standard error of the difference in sample means,
Using a 1% level of significance, can the hypothesis that the distributions for the student's scores are identical be accepted?
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
Mean and standard deviation are 584.6 and 34.28
Compute the sample variance and the sample standard deviation for these data (to 2 decimals).
Find out the slope, b, and the intercept, a, for the least-squares line. Write the equation of the least squares line.
The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints.
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
what size sample should the director choose if she wishes to estimate the mean number of admissions per 24-hour period to within 1 admission with 99 percent reliability.
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