Math Homework

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Suppose 47% of the students in a university are baseball
Suppose 47% of the students in a university are baseball players.If a sample of 435 students is selected, what is the probability that the sample proportion of baseball players will be greater than 40… read more
R.R. Jha
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A quality control expert at LIFE batteries wants to test
A quality control expert at LIFE batteries wants to test their new batteries. The design engineer claims they have a variance of 8464 with a mean life of 886 minutes.If the claim is true, in a sample … read more
R.R. Jha
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Bachelor's Degree
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A film distribution manager calculates that 4% of the films
A film distribution manager calculates that 4% of the films released are flops.If the manager is correct, what is the probability that the proportion of flops in a sample of 747 released films would b… read more
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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A door delivery florist wishes to estimate the proportion of
A door delivery florist wishes to estimate the proportion of people in his city that will purchase his flowers. Suppose the true proportion is 0.07.If 397 are sampled, what is the probability that the… read more
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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A courier service company wishes to estimate the proportion
A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the true proportion is 0.04.If 384 are sampled, what is the probability that… read more
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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The population mean annual salary for environmental
The population mean annual salary for environmental compliance specialists is about \$63,500. A random sample of 40 specialists is drawn from this population. What is the probability that the mean sala… read more
R.R. Jha
Bachelor's Degree
Bachelor's Degree
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for John Do you think you can help me while Im working on
for John Do you think you can help me while I'm working on the problems tonight right around 11? I'll pay you \$80.00. But you'll have to be online with me until I get throught with the assignment.… read more
Math-John
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1. Assume that the weight loss for the first month of a diet
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 distributio… read more
Chirag
Master's Degree
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(b) What is the standard error of the mean (Round your answer
(b) What is the standard error of the mean? (Round your answer to 2 decimal places.) Standard error of the mean seconds. (c) What percent of the sample means will be greater than 154 seconds? (Round y… read more
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Teacher
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What is the indicated probabilty . A bag contains 5 red marbles
What is the indicated probabilty . A bag contains 5 red marbles 3 blue marbels, and 1 green marble… read more
Scott
Master's Degree
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8. The life span of a battery is normally distributed, with
8. The life span of a battery is normally distributed, with a mean of 2300 hours and a standard deviation of 50 hours. What percent of batteries have a life span that is more than 2365 hours? What per… read more
Ryan
Bachelor's Degree
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Question 1 . survey was conducted to measure the height of
Question 1 . survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 67.1 inche… read more
Stevewh
Teacher
Bachelor's Degree
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Cholesterol levels of adult males are approximately normally
Cholesterol levels of adult males are approximately normally distributed with a mean of 224 mg/dL and a listed variance of 506.25. Some researchers claim that the variance of cholesterol levels of adu… read more
Stevewh
Teacher
Bachelor's Degree
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BIG Corporation advertises that its light bulbs have a mean
BIG Corporation advertises that its light bulbs have a mean lifetime, , of at least hours. Suppose that we have reason to doubt this claim and decide to do a statistical test of the claim. We choose a… read more
Chirag
Master's Degree
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A hotel manager assumes that 29% of the hotel rooms are booked.
A hotel manager assumes that 29% of the hotel rooms are booked. If the manager is accurate, what is the probability that the proportion of rooms booked in a sample of 657 rooms would differ from the p… read more
dhouse1940
Retired
Master's Degree
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Question 1 An automobile assembly line operation has a scheduled
Question 1 An automobile assembly line operation has a scheduled mean completion time, , of minutes. The standard deviation of completion times is minutes. It is claimed that, under new management, th… read more
Stevewh
Teacher
Bachelor's Degree
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Hi, Please any help will be appreciated. Use the normal
Hi, Please any help will be appreciated. Use the normal distribution od SAT critical reading scores for which the mean is 508 and the standard deviation is 120. Assume the variable x is normally distr… read more
Stevewh
Teacher
Bachelor's Degree
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1.a vending machine dispenses coffee into a twenty ounce cup.
1.a vending machine dispenses coffee into a twenty ounce cup. The amount of coffee dispensed into the cup is normally distributed with a standard deviation of 0.06 ounce. You can allow the cup to over… read more
Stevewh
Teacher
Bachelor's Degree
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