Question

The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear...

The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear in the world. Diadora's footwear products are primarily designed for athletic use, but also for casual and leisure wear. Historical data indicates that the average customer buys 3.9 pairs of sports shoes per year, with a population standard deviation of 4. If samples of 49 customers are taken, answer the following questions.
Your answers should be accurate to 2 decimal places.
a) What is the standard error of the mean for the sample means?


b) What is the probability that the a given sample mean is between 8 and 11 pairs of shoes?


c) What is the probability that the difference between a given sample mean and the population mean is less than 0.21?


d) What is the probability a given sample mean is greater than 11 pairs?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear...
The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear in the world. Diadora's footwear products are primarily designed for athletic use, but also for casual and leisure wear. Historical data indicates that the average customer buys 2.1 pairs of sports shoes per year, with a population standard deviation of 3.4. If samples of 33 customers are taken, answer the following questions. Your answers should be accurate to 2 decimal places. a) What is...
The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear...
The Diadora annual report states that Diadora is one of the largest sellers of athletic footwear in the world. Diadora's footwear products are primarily designed for athletic use, but also for casual and leisure wear. Historical data indicates that the average customer buys 3.7 pairs of sports shoes per year, with a population standard deviation of 4. If samples of 42 customers are taken, answer the following questions. Your answers should be accurate to 2 decimal places. a) What is...
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have...
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 57 ounces and a standard deviation of 6 ounces. a) 95% of the widget weights lie between  and b) What percentage of the widget weights lie between 39 and 69 ounces?  % c) What percentage of the widget weights lie below 63 ?  % 57 randomly selected students were asked how many siblings were in their family. Let X represent the number of pairs...
An orange juice producer buys oranges from a large orange grove that has one variety of...
An orange juice producer buys oranges from a large orange grove that has one variety of orange. The amount of juice squeezed from these oranges is approximately normally distributed, with a mean of 4.70 ounces and a standard deviation of 0.40 ounce. Suppose that you select a sample of 25 oranges. a) What is the probability that the sample mean amount of juice will be at least 4.60 ounces?                               _________ b) The probability is 78% that the sample mean amount...
#5 A study of adult cell phone owners found that their annual income was normally distributed...
#5 A study of adult cell phone owners found that their annual income was normally distributed with a mean of $41,200 and a standard deviation of $18500. If sellers of cell phones wish to target the adult owners of cell phones whose incomes are in the top 83%. What is the minimum income level for the top 83% of the group? #4 The heights of high-school students are normally distributed with a mean of μ = 62.5 inches and standard...
An orange juice producer buys oranges from a large orange grove that has one variety of...
An orange juice producer buys oranges from a large orange grove that has one variety of orange. The amount of juice squeezed from these oranges is approximately normally distributed, with a mean of 4.70 ounces and a standard deviation of 0.40 ounce. Suppose that you select a sample of 25 oranges. a. What is the probability that the sample mean amount of juice will be at least 4.60 ounces? b. The probability is 70% that the sample mean amount of...
A study found that highway drivers in one states traveled ot an average soeed of 58.8...
A study found that highway drivers in one states traveled ot an average soeed of 58.8 miles oer hour (MPH). Assume the population standard deviation is 6.0 MPH. Complete parts a through d below: a). what is the probability that a sample of 30 of drivers will have a sample mean less than 57 MPH? P(x< 57)= b). what is the probability that a sample of 50 of drivers will have a sample mean less than 57 MPH? P(x< 57)=...
3. Customers of one of the nation's largest food chains were surveyed to estimate the difference...
3. Customers of one of the nation's largest food chains were surveyed to estimate the difference in mean time spent in the store per visit between men and women shoppers. Previous studies indicate that the population standard deviation is 16 minutes for females and 11 minutes for males. Random samples of 100 male and 100 female customers shopping in the chain's stores yield sample means of 34.5 minutes for males and 42.4 minutes for females. Use the 0.05 significance level...
A report announced that the median sales price of new houses sold one year was ?$211,000?,...
A report announced that the median sales price of new houses sold one year was ?$211,000?, and the mean sales price was ?$274,200. Assume that the standard deviation of the prices is ?$90,000. Complete parts? (a) through? (d) below. a) If you select samples of n=?2, describe the shape of the sampling distribution of X. Choose the correct answer below. A.The sampling distribution is skewed to the? right, but less skewed to the right than the population. B.The sampling distribution...
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes....
Among the thirty largest U.S. cities, the mean one-way commute time to work is 25.8 minutes. The longest one-way travel time is in New York City, where the mean time is 37.9 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 6.9 minutes. What percent of the New York City commutes are for less than 29 minutes? What percent are between 29 and 35 minutes? What percent are...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT