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A market research company conducted a survey to find the percentage of people who exercise at least 30 minutes every day. Out of 186 persons surveyed, 57 replied that they exercise at least 30 minutes every day.
What is the standard error? Answer choices are rounded to the hundredths place.
Explain the difference between rejecting and failing to reject the null hypothesis. In which case does a researcher conclude that the independent variable has an effect on the dependent variable?
A woman has a collection of snakes and iguanas. Her young son observed that the reptiles have a total of 50 eyes and 56 feet. How many reptiles of each type does the woman have?
How many gears should be produced in each run at what minimum cost and what is the cycle time?
Intuition tells us that small samples lead to fluke results. Let's double thesample size and imagine that the study had revealed 14 errors
Select one of the models ranging from Naylor (1967) and the Preparation-Engagement-Perpetuation (PEP) model listed from Chapter 1 of the Connors (2012) text and compare and contrast them in regards to what makes them similar and dissimilar.
Compute a 95% confidence interval for the difference between the population means for the two groups using the t-distribution. What is the lower limit?
Describe the population and the sample in this problem.- Is this a random sample? If so, justify your answer. If not, describe a technique for obtaining a random sample.
If its weekly cost function is C(x)=68,000+150x, how should the manufacturer set the size of the rebate in order to maximize its profit?
Is there any evidence to suggest that the true proportion of Canadians who are concerned about privacy protection is different from 67% in any province? Justify your answer.
a loan from a bank of 100000 is to be repaid by bob in 10 annual payments beginning 1 year from the date of the loan.
A lawyer believes that a certain judge imposes prison sentences for property crimes that are longer than the state average 11.7 months.
The average height of male physicians employed by a Veterans Affairs med- ical center is 180.18 cm with a standard deviation of 4.75 cm. Find the probability of obtaining a mean height of 184.93 cm or greater for a sample size of 5.
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