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The National Management Association reports that during the past year, there has been a substantial increase in the use of "flextime" in the work place. Last year, a sample of 100 businesses was taken which indicated that 22% had implemented the use of "flextime." This year, a second survey of 100 showed that 29% were using flextime. At the 0.05 level, does this represent an increase in the proportion?
-State the null and alternative hypotheses. -What is the value of the test statistic? -Specify the rejection region? -State the conclusion.
a manufacturer of sports drinks has randomly sampled 198 men and 202 women. each sampled participant was asked to taste
Calculate the free cash flow for Cellular Access for the most recent fiscal year. The free cash flow is closest to ($ million): A. 155 B. 166 C. 44 D. 99
A university recently completed a study to determine whether the number of classes students dropped during their college course work was related.
Choose and compute the appropriate descriptive statistics to describe characteristics of the sample under study (such as sex distribution, age, and ethnicity).
A consumer protection group is concerned that a ketchup manufacturer is filling its 20-ounce family-size containers with less than 20 ounces of ketchup.
A recent national survey found that high school students watched an average (mean) of 6.8 videos per month. A random sample of 36 college students revealed that the mean number of videos watched last month was 6.2
Determine the stability of the equilibrium position at the lowest point of the wire in the cases (i) α = 2mg/a, and (ii) λ = 5mga.
SOB's systolic blood pressure is a random variable with a mean of 145 mmHG and a standard deviation of 20mmHG. If the SOB's blood pressure is taken at a randomly chosen moment
Find the standard deviation of this sample of numbers. Round your answer to two decimal places.
The results are x‾ = $259.60 and s = $52.00. Give a 95% confidence interval for the average amount of bonus dollars that will be spent by a cardholder during the year.
At a computer manufacturing company, the actual size of computer chips is normally distributed with a mean of 1 centimeter and the standard deviation of 0.1 centimeter. A random sample of 12 computer chips is taken. What is the possibility that th..
a sample of 40 quarters was taken and it was found that the average weight was 5.522 g with a standard deviation of
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