Pre-Calculus

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Students collected the following data measuring the accuracy
Students collected the following data measuring the accuracy of wristwatches. The times (sec) below show the discrepancy between the real time and the time indicated on the wristwatch. Negative values… read more
Kofi
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SAT scores are distributed with a mean of 1,500 and a
SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to lim… read more
Scott
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Platelet Counts of Women 95% confidence; n​=29 s=65.6 Use
Platelet Counts of Women 95% confidence; n​=29 s=65.6 Use the given information to find the number of degrees of​ freedom, the critical values X2/L X 2/R and the confidence interval estimate of popula… read more
Scott
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A research institute poll asked respondents if they felt
A research institute poll asked respondents if they felt vulnerable to identity theft. In the​ poll, n= 934 and x= 576 who said​ "yes." Use a 99 confidence level… read more
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Suppose x has a distribution with a mean of 80 and a
Suppose x has a distribution with a mean of 80 and a standard deviation of 9. Random samples of size n = 36 are drawn. (a) Describe the x bar distribution. x bar has a normal distribution. x bar has a… read more
Neo
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1 point) A large-sample 95% confidence interval for the
1 point) A large-sample 95% confidence interval for the difference in two population proportions is determined to be (-0.148, -0.032). If performing a significance test at the α = 0.05 level on the di… read more
Tom
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In order to approximate the number of text messages sent
In order to approximate the number of text messages sent daily by Swedish teenagers, Neu Star Communications took a random sample of Swedish youth, finding the number of text messages they sent on a g… read more
Kofi
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1. (5 pts) A researcher wants to estimate, at 92% confidence
1. (5 pts) A researcher wants to estimate, at 92% confidence level, the proportion of Covid-19 symptomatic patients that have diabetes. The researcher wants estimate to be within three percentage poin… read more
R.R. Jha
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Question 1 of 40 2.5 Points The distribution of .A. degrees
Question 1 of 40 2.5 Points The distribution of B.A. degrees conferred by a local college is listed below, by major. Major Frequency English 2073 Mathematics 2164 Chemistry 318 Physics 856 Liberal Art… read more
Ryan
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I am looking at a set of questions you answered 9 months
Hi Ryan, I am looking at a set of questions you answered 9 months ago. How can I get those answers. ***** ***** … read more
Ryan
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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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Question 1 of 40 2.5 Points A die with 12 sides is rolled.
Question 1 of 40 2.5 Points A die with 12 sides is rolled. What is the probability of rolling a number less than 11? Is this the same as rolling a total less than 11 with two six-sided dice? Explain. … read more
Ryan
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I see where you have already answered a homework assignment the same as this. Please let me know what the charge will be to get the answers. Questions 1 to 20: Select the best answer to each question.… read more
R.R. Jha
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18. Assume that a sample is used to estimate a population mean
18. Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the … read more
Chirag
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"For John Only " Hi John.. I noticed you have answered
"For John Only " Hi John.. I noticed you have answered similiar questions to the ones I would like for you to help me with. Hopefully you will be able to. 1. The commissioner of the state police is re… read more
Math-John
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A sample of 93 golfers showed that their average score on a
A sample of 93 golfers showed that their average score on a particular golf course was 89.33 with a standard deviation of 6.43. Answer each of the following (show all work and state the final answer t… read more
akch2002
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A confidence interval estimate for the population mean is given
A confidence interval estimate for the population mean is given to be (39.50, 47.85). If the standard deviation is 13.639 and the sample size is 41, answer each of the following (show all work): (A) D… read more
Math-John
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1. By measuring the amount of time it takes a component of
1. By measuring the amount of time it takes a component of a product to move from one workstation to the next, an engineer has estimated that the standard deviation is 3.86 seconds. Answer each of the… read more
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