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A recent national survey found that high school students watch an average of 6.4 videos per month. A random sample of 25 college students revealed that the mean number of videos watched last month was 6.2, with a standard deviation of 0.5. At a .05 significance level, can we conclude college students watch fewer videos per month than high school students?"
Eighty-eight shoppers were interviewed at random, and 59 said that they prefer to shop alone. What is the value of q-hat?
Normal distribution with mean 35 minutes and standard deviation 2 minutes. On 95% of occasions the mailing preparation takes less than _______ minutes.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
It is estimated that the probability that the general population will live past their 85th birthday is 5.4%. Use the standard normal distribution to approximate this Binomial problem and answer the following questions.
N=120, population standard deviation is (known) 5, alpha =.05, standard error of the mean (sigma of xbar)= .46, h0 is rejected if xbar
What percentage of bags will weigh more than 16.4 ounces? What percentate of bags will weigh less than 15.92 ounces
Generate a 95% confidence interval for the difference in proportions of patients with hypertension between groups. Experimental (n=100) =14%
Build a 95% confidence interval for the mean of the population from the given sample data.
Quadratic equations can be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods?
Find 99% confidence interval for estimating their mean height and find 95% confidence interval for estimating the mean height.
Find probability using normal distribution.Using N (1152, 84), the Normal model for weight of Angus steers, what percent of steers weigh.
Last year the average deposit for all 10,000 clients was $25,000 with a standard deviation of $30,000. Do you think a small sample of 25 is enough to give them the margin of error they want? If not, how large a sample do you suggest they need to t..
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