Calculus and Above

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According to a research​ institution, men spent an average
According to a research​ institution, men spent an average of ​\$133.84 on​ Valentine's Day gifts in 2009. Assume the standard deviation for this population is ​\$35 and that it is normally distributed.… read more
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A population of values has a normal distribution with μ = 17
A population of values has a normal distribution with μ = 17 and σ = 71.5 . You intend to draw a random sample of size n = 236 .Find the probability that a single randomly selected value is greater th… read more
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Assume that nontraditional undergraduate college students are defined as 25 years or older and working. And assume the population mean Grade Point Average of nontraditional students is 3.50 with a pop… read more
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I need help with stats problems asap. A sample of 10
A sample of 10 observations from a normal distribution has a sample mean of 50 and a sample standard deviation of 15.43. The alternative hypothesis is that mu is greater than 45. What is the critical value of the test statistic at the 0.02 level of significance a. 1.973 b. 2.150 c. 2.398 d. 1.833. e. 2.821 … read more
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1. Apply the Central Limit Theorem for Sample Means A
1. Apply the Central Limit Theorem for Sample MeansA company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 248 cm and a standard deviation of 1.9 cm. For s… read more
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There is a theory known as the “Freshman 15”. It's believed
There is a theory known as the “Freshman 15”. It's believed that college students gain an average of 15 pounds in their first year at school. You randomly select 30 students at the end of their freshm… read more
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A New York charity recently did a fund raising campaign to
A New York charity recently did a fund raising campaign to support libraries. The following table gives the number of people who gave money at each fundraising level based on what region of the state … read more
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I need help with a problem. The weight of newborn babies are
The weight of newborn babies are normally distributed with a mean of 7.65 pounds and a standard deviation of 0.61 pounds. If the weight of 22 newborn are randomly selected, what's the probability that their mean weight is more than 7.23 pounds? Round to 4-decimal places. … read more
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A researcher wishes to test the claim that the average cost
A researcher wishes to test the claim that the average cost of tuition and fees at a 4-year college is greater than \$5700. She selects a random sample of 49 colleges and finds the mean to be \$5950. Th… read more
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Statstics , i have a few problems do do tonight but i
i have a few problems do do tonight but i don't know how to start them … read more
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Question 1 Assume that the weight loss first month
Question 1 Assume that the weight loss for the first month of a diet program varies between 6 pounds and 12 pounds, and is spread evenly over the range of possibilities, so that there is a uniform dis… read more
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1. The cashier service time at the local branch of the Rivertown
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Chapter 6 00. The average rent in a city is \$1,570 per month
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NBC TV news, in a segment on the price of gasoline
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3. Data from a National Health Survey show that mens average
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1. Describe the following variables as quantitative or qualitative,
1. Describe the following variables as quantitative or qualitative, and describe the scales of measurement. A. The distance a student commutes from home to campus. B. The rating of a stock as "strong … read more
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1.Assume that the weight loss for the first month of a diet
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"StatsPro" next group for my test 11. Which of the following
"StatsPro" next group for my test 11. Which of the following statements are true? (Check one) I. A sample survey is an example of an experimental study. II. An observational study requires fewer resou… read more
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