Calculus and Above

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According to​ eMarketer, adults in the United States spent
According to​ eMarketer, adults in the United States spent an average of 92 minutes per day on social media platforms​ Facebook, Snapchat, and Instagram in 2017. Assume that minutes per day on these p… read more
Scott
Master's Degree
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An organization installs new garage doors on residential
An organization installs new garage doors on residential homes. Suppose the installation time for a residence follows the uniform distribution with a minimum time of 170 minutes and a maximum time of … read more
Keith Pelletier
Master's Degree
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The commute time to work for a particular employee follows a
The commute time to work for a particular employee follows a continuous uniform distribution with a minimum time of 19 minutes and maximum time of 35 minutes. Complete parts a–f. ​a) Calculate the val… read more
Scott
Master's Degree
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1. Suppose the time to complete a 200-meter backstroke swim
1. Suppose the time to complete a 200-meter backstroke swim for female competitive swimmers is normally distributed with a mean μ = 141 seconds and a standard deviation σ = 7 seconds. Suppose that to … read more
rajeevanpillai
Master's Degree
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Finding Probabilities in Uniform Distributions The time it
Finding Probabilities in Uniform DistributionsThe time it takes me to wash the dishes is uniformly distributed between 11 minutes and 21 minutes. The probability density function is f(x) = 1/10.What i… read more
Kofi
PhD in Statistics
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The taxi and takeoff time for commercial jets is a random
The taxi and takeoff time for commercial jets is a random variable x with a mean of 9 minutes and a standard deviation of 3.2 minutes. Assume that the distribution of taxi and takeoff times is approxi… read more
rajeevanpillai
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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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 0.06.If 333 are sampled, what is the probability that… read more
Sandhya_sharma
Master's Degree
Master's Degree
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A racing car consumes a mean of 86 gallons of gas per race
A racing car consumes a mean of 86 gallons of gas per race with a variance of 9.If 33 racing cars are randomly selected, what is the probability that the sample mean would be greater than 85.3 gallons… read more
Sandhya_sharma
Master's Degree
Master's Degree
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Suppose 58% of the doctors in America are dentists. If a
Suppose 58% of the doctors in America are dentists.If a random sample of size 577 is selected, what is the probability that the proportion of doctors who are dentists will be less than 54%? Round your… read more
Sandhya_sharma
Master's Degree
Master's Degree
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The manufacturer of a fertilizer guarantees that, with the
The manufacturer of a fertilizer guarantees that, with the aid of the fertilizer, 70 %of planted seeds will germinate. Suppose the manufacturer is correct. If 6seeds planted with the fertilizer are ra… read more
Sandhya_sharma
Master's Degree
Master's Degree
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Consider a binomial experiment with n = 10 and p = 0.40. (a)
Consider a binomial experiment with n = 10 and p = 0.40. (a) Compute f(0). (Round your answer to four decimal places.) f(0) = (b) Compute f(2). (Round your answer to four decimal places.) f(2) = (c) C… read more
GLENN GILONGOS
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Calls to a customer service center last on average 2.7 minutes
Calls to a customer service center last on average 2.7 minutes with a standard deviation of 1.9 minutes. An operator in the call center is required to answer 90 calls each day. Assume the call times a… read more
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What is the probability that a pipe is between 10.22ft and 10.35ft
A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.55 feet. Assume that the l… read more
Stevewh
Teacher
Bachelor's Degree
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Weights of airline passenger bags are normally distributed
Suppose that the weights of airline passenger bags are normally distributed with a mean of 48.26 pounds and a standard deviation of 3 pounds. 1)What is the probability that the weight of a bag will be… read more
Sandhya_sharma
Master's Degree
Master's Degree
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Let X represent the time it takes from when someone enters
Let X represent the time it takes from when someone enters the line for a roller coaster until they exit on the other side. Consider the probability model defined by the cumulative distribution functi… read more
Ryan
Bachelor's Degree
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A company has 4 service trucks.Consider the probability model for X
I did have another question, and on the second question below, could you explain what you did.. A company has 4 service trucks. Let X represent the number of trucks that are not working at any point i… read more
Sandhya_sharma
Master's Degree
Master's Degree
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A company that produces DVD drives has a 8% defective rate.
I wanted to know how to work the following problems out: A company that produces DVD drives has a 8% defective rate. Let X represent the number of defectives in a random sample of 52 of their drives. … read more
Sandhya_sharma
Master's Degree
Master's Degree
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