Calculus and Above

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1. The average licensed driver travels 1,536 miles per month
1. The average licensed driver travels 1,536 miles per month in his or her vehicle. Assume the population standard deviation is 429 miles per month. Determine the interval that will contain 96​% of th… read more
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1. A health journal found that 56.3​% of college students
1. A health journal found that 56.3​% of college students who lived in coed dormitories consumed alcohol weekly​ (compared with​ 26.5% who lived in​ single-sex dormitories). A random sample of 150 stu… read more
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Master's Degree
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1. A sample of 125 is drawn from a population with a
1. A sample of 125 is drawn from a population with a proportion equal to 0.58. Complete parts ​a) through ​c) below. Click here to view page 1 of the cumulative standardized normal distribution table.… read more
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Master's Degree
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1. Consider a population of 200 with a mean of 50 and a
1. Consider a population of 200 with a mean of 50 and a standard deviation equal to 29. What is the probability of obtaining a sample mean of 52 or less from a sample of 40​? Click here to view page 1… read more
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Regular gasoline averaged ​\$2.95 per gallon in February
Regular gasoline averaged ​\$2.95 per gallon in February 2018. Assume the standard deviation for gasoline prices is ​\$0.16 per gallon. A random sample of 35 service stations was selected. Complete part… read more
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A road averages 2,025 vehicles per day with a standard
A road averages 2,025 vehicles per day with a standard deviation of 505 vehicles per day. A traffic counter was used on this road on 36 days that were randomly selected. a. What is the probability tha… read more
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Master's Degree
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Much of a yearly basketball tournament takes place during
Much of a yearly basketball tournament takes place during the workweek. According to a​ survey, 40​% of employed adults who plan to watch at least one tournament game say that they have watched the ye… read more
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Master's Degree
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A grocery store has 20 ​two-liter bottles of diet cola on
A grocery store has 20 ​two-liter bottles of diet cola on the​ shelf, 6 of which have exceeded their shelf life date. You randomly select 4 bottles of diet cola without checking the expiration date. C… read more
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Master's Degree
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A recent survey of 1030 employees found that 26​% of them
A recent survey of 1030 employees found that 26​% of them would lay off their bosses if they could. Complete parts a through d below based on a random sample of 10 employees. a. What is the probabilit… read more
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Is a salesperson for​ Camera's Etc., which is a retailer
Sara is a salesperson for​ Camera's Etc., which is a retailer for​ high-end digital cameras.​ Historically, Sara has averaged selling 2.2 extended warranties per day for cameras that she sells. Assume… read more
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Master's Degree
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According to​ mashable.com, 37​% of Snapchat users use the
According to​ mashable.com, 37​% of Snapchat users use the app for Creativity. A random sample of 39 users was selected. Assuming this estimate is​ true, use the normal approximation to the binomial d… read more
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Master's Degree
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The average price of a​ 42-in. television on an electronics​
The average price of a​ 42-in. television on an electronics​ store's website is ​\$820. Assume the price of these televisions follows the normal distribution with a standard deviation of ​\$150. Complet… read more
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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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Much of a yearly basketball tournament takes place during
Much of a yearly basketball tournament takes place during the workweek. According to a​ survey, 40​% of employed adults who plan to watch at least one tournament game say that they have watched the ye… read more
Scott
Master's Degree
18,704 satisfied customers
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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In a recent study on world​ happiness, participants were
In a recent study on world​ happiness, participants were asked to evaluate their current lives on a scale from 0 to​ 10, where 0 represents the worst possible life and 10 represents the best possible … read more
Kofi
PhD in Statistics
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The mean incubation time for a type of fertilized egg kept
The mean incubation time for a type of fertilized egg kept at a certain temperature is 18 days. Suppose that the incubation times are approximately normally distributed with a standard deviation of 2 … read more
rajeevanpillai
Master's Degree
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Suppose that the lifetimes of light bulbs are approximately
Suppose that the lifetimes of light bulbs are approximately normally​ distributed, with a mean of 56 hours and a standard deviation of 3.3 hours. With this​ information, answer the following questions… read more
Kofi
PhD in Statistics
Ph.D.
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