igggyuh

6 Questions
3 Answers

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Statistics

A manufacturer knows that their items have a lengths that are skewed right, with a mean of 14.3 inches, and standard deviation of 1.6 inches.
If 43 items are chosen at random, what is the probability that their mean length is greater than 15 inches?
(Round read more ..

igggyuh May 4, 2021

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486

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Continuous Probability Distributions

The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 41 and a standard deviation of 10. Using the empirical rule, what is the approximate percentage of 1-mile read more ..

igggyuh Apr 26, 2021

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422

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Continuous Probability Distributions

The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 56 and a standard deviation of 5. Using the empirical read more ..

igggyuh Apr 26, 2021

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595

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probability

Here is the probability model for the blood type of a randomly chosen person in the United States.

What is the probability that a randomly chosen American does read more ..

ElectricPavlov ●●●●●

igggyuh Apr 12, 2021

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514

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Probability

A jar contains 5 pennies, 6 nickels and 5 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins.

Find the probability X = 10.
read more ..

igggyuh Apr 12, 2021

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340

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Binomial Distribution

A small regional carrier accepted 21 reservations for a particular flight with 18 seats. 15 reservations went to regular customers who will arrive for the flight. Each of the remaining passengers will arrive for the flight with a 47% chance, independently read more ..

igggyuh Apr 12, 2021

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Thank you so much

igggyuhApr 12, 2021

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Oh I also forgot to add in the "Find the probability X = 11." Sorry, can you help me with that ?

igggyuhApr 12, 2021

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i put .53 and it says it's wrong.

igggyuhApr 12, 2021