Calculus and Above

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Let x represent the dollar amount spent on supermarket
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a newspaper article, the mean of the x distribution is about \$46 and the es… read more
rajeevanpillai
Master's Degree
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Time spent using e-mail per session is normally distributed,
Time spent using e-mail per session is normally distributed, with µ = 8 minutes and σ = 2 minutes. Consider a random sample of 25 sessions.a) What is the probability that the sample mean is between 7.… read more
Scott
Master's Degree
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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
MunishK
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M. Sc Mathematica
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A random sample of 40 observations is to be drawn from a
A random sample of 40 observations is to be drawn from a large population of measurements. It is known that 30% of the measurements in the population are 1's, 20% of the measurements are 2's, 20% are … read more
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Master's Degree
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Suppose a geyser has a mean time between eruptions of 91
Suppose a geyser has a mean time between eruptions of 91 minutes. Let the interval of time between the eruptions be normally distributed with standard deviation 19 minutes. Complete parts ​(a) through… read more
Neo
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5. Bones Brothers & Associates prepare individual tax
5. Bones Brothers & Associates prepare individual tax returns. Over prior years, Bones Brothers has maintained careful records regarding the time to prepare a return. The mean time to prepare a return… read more
Sandhya_sharma
Master's Degree
Master's Degree
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How much do you charge for different STAT questions and are
How much do you charge for different STAT questions and are they 100% right? I am not familiar with your services … read more
Sandhya_sharma
Master's Degree
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The U.S. Geological Survey compiled historical data about
The U.S. Geological Survey compiled historical data about Old Faithful Geyser (Yellowstone National Park) from 1870 to 1987. Let x1 be a random variable that represents the time interval (in minutes) … read more
Sandhya_sharma
Master's Degree
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Let x represent the dollar amount spent on supermarket
Let x represent the dollar amount spent on supermarket impulse buying in a 10-minute (unplanned) shopping interval. Based on a certain article, the mean of the x distribution is about \$22 and the esti… read more
Sandhya_sharma
Master's Degree
Master's Degree
18,161 satisfied customers
1. If A and are independent events with P(A) = 0.4 and P()
1. If A and B are independent events with P(A) = 0.4 and P(B) = 0.6, then P(A l B) = • 0.76 • 1.00 • 0.24 • 0.2 • None of the above 2. If A and B are independent events with P(A) = 0.2 and P(B) = 0.6,… read more
Ryan
Bachelor's Degree
4,665 satisfied customers
The average weekly wage in Indiana, according the Bureau of
The average weekly wage in Indiana, according the Bureau of Labor Statistic, is 𝜇 = \$845. Assume the standard deviation is 𝜎 = \$250. For random samples of 𝑛 = 200 workers, the expected value of the… read more
Ryan
Bachelor's Degree
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6.What is the difference between the regression equation y ̂=b_0+b_1
6.What is the difference between the regression equation y ̂=b_0+b_1 x and the regression equation y=β_0+β_1 x? Questions 7 and 8 are based on the data below. The table below lists measurements from e… read more
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Bachelor's Degree
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1. The cashier service time at the local branch of the Rivertown
1. The cashier service time at the local branch of the Rivertown bank has an exponential distribution with a mean of 2.5 minutes. What is the probability that the service time: Is between 2 and 4 minu… read more
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A sample of 120 U.S. households has a mean computer usage time
A sample of 120 U.S. households has a mean computer usage time of 19.2 hours per week with a sample standard deviation of 3.3 hours. Find a 99% confidence interval for the mean computer usage time of … read more
Stevewh
Teacher
Bachelor's Degree
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1) 29% of college students say they use credit cards because
1) 29% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. Find the proba… read more
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Explain what a “sampling distribution of sample means” is.
Explain what a “sampling distribution of sample means” is. Be specific! Fill in the blanks in the statements below. The Central Limit Theorem states that as the sample size increases, the distribution… read more
Osbert12
Master's Degree
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Hello Greg, I have more work if you want. 1. Consider a
Hello Greg, I have more work if you want. 1. Consider a population with and (A) Calculate the z-score for from a sample of size 14. (B) Could this z-score be used in calculating probabilities using Ta… read more
Mr. Gregory White
Master's Degree
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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 distribution… read more
SusanAthena
Master's Degree
Master's Degree
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