Probability that student uses fewer than six hundred minutes

Assignment Help Basic Statistics
Reference no: EM13120817

The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?

Reference no: EM13120817

Questions Cloud

Create an analogy or metaphor : Determine which step in estimating a cost function using quality analysis is the most likely to present the greatest challenge and how you would address that challenge.
What is the ending oaa balance : If the beginning balance in OAA is $3,900, and the following transactions occur, what is the ending OAA balance?
Amount of concentration in chemicals : Chandra has 5 liters of a 24% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 8 liters of 27% solution?
Probability that more than two turn out to be defective : 10 parts produced by this machine are randomly selected, what is the probability that more than 2 turn out to be defective? Round your answer to four decimal places.
Probability that student uses fewer than six hundred minutes : The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?
Describe any adjustment that might be necessary : Given the facts presented, discuss the various factors that affect the reli- ability of (1) the comparable uncontrolled price method, (2) the resale price method, and (3) the cost-plus method.
Compute the expected frequency for brand : The data show that 48 of the doctors picked brand x. If these data were evaluated using a chi-square test for goodness of fit, what is the expected frequency for brand x?
Analyze the logic of the article : Choose an online newspaper article. Use the Elements of Reasoning Model to analyze the logic of the article. Your paper needs to be 1 page, 12 point font, and double spaced.
Find probability two balls are drawn : Two balls are drawn (without replacement) from an urn that contains four red balls, five green balls, and seven white balls

Reviews

Write a Review

Basic Statistics Questions & Answers

  True amount of the compound

You want to determine if the sample result gives good evidence that the true amount of the compound is not equal to 2 gms. Carry out the test, find the P-value, and state your conclusion.

  Control limits for p-chart

What control limits should be applied to his sample?

  Calculation of probability of shark attacks

The number of shark attacks per year in the US is distributed approximately normal, with a Variance of 31.8 and a standard deviation of 10.

  Hypothesis test for population mean-t-test

A rental agent claims that the mean monthly rent, , for apartments on the east side of town is less than $675 . A random sample of 18 monthly rents for apartments on the east side has a mean of $661, with a standard deviation of $24.

  Number of blemishes on each piece

In checking the quality of the work, she notices that some slight blemishes occasionally are apparent. A sample of 20 pieces of work resulted in the following number of blemishes on each piece:

  Maximum error of estimate-sample size-width of confidence

Given a level of confidence of 99% and a population standard deviation of 10, what other information is necessary:

  Statistics-testing magnets for treating pain

A study was conducted to determine whether magnets were effective in treating pain. The valves represent pain measurements.

  Compute the descriptive statistics for the data

What is the answer to the following unsorted data shows the number of traffic tickets given each day by Deputy Fife over the last eleven days.

  Significant difference in the average prices

Is there a significant difference in the average prices for these two different supermarket chains? Test at α = 0.05

  Applying confidence interval for population mean

A stationary store wants to estimate the mean retail value of greeting cards that it has in inventory A random sample of 100 greeting cards. a mean value of 2.55 and standard deviation of 0.44

  Probability for the debt for a borrower

What is the probability that the debt for a borrower with good credit is more than $18,000?

  Random sample of working days

The following data represents the amount of time in minutes that a person had to wait for a bus to work on a random sample of 5 working days.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd