The mean score of a college entrance test is 500 the

Assignment Help Basic Statistics
Reference no: EM13639693

The mean score of a college entrance test is 500; the standard deviation is 75. The scores are normally distributed. What percent of the students scored below 320?

About 50.82%

About 34.13%

About 7.86%

About 0.82%

Reference no: EM13639693

Questions Cloud

A simple random sample of 10 software widgets are chosen : a simple random sample of 10 software widgets are chosen for installation. if 10 of this type of software widgets have
Work out the overall combustion reaction for stoichiometric : it is proposed to use liquid petroleum gas lpg to fuel spark-ignition engines. a typical sample of the fuel on a volume
If the propane and air streams enter the chamber at 250degc : propane c3h8 is burned in a combustion chamber at a flow rate of 25.50 m3min with 30.0 excess air. if the propane and
Using the cv compare the variability of the two items : using the cv compare the variability of the two items. suggest reasons for any differencescv of item nr 1cv 0.01837cv
The mean score of a college entrance test is 500 the : the mean score of a college entrance test is 500 the standard deviation is 75. the scores are normally distributed.
Calculate the fuel-air equivalence ratio at which this : gas is sampled at atmospheric pressure from the exhaust manifold of an internal combustion engine and analyzed. the
A manufactured battery is defective with the probability of : a manufactured battery is defective with the probability of 5.in a lot of n200 batteries approximate the probability
A total of 200mol of a compound is allowed to react with : a total of 2.00mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 110g of
What is the area under the normal curve between z -10 and : what is the area under the normal curve between z -1.0 and z

Reviews

Write a Review

Basic Statistics Questions & Answers

  Probability related to testing of batteries

Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30.

  Hypothesis testing of mean p-value method

Use a P-value to test the claim about the population mean using the given sample statistics. State your decision for a=0.05. Claim: mean does not = 230

  Consider a poisson probability distribution in a process

consider a poisson probability distribution in a process with an average of 3 flaws every 100 feet. find the

  Testing the significance of the regression model

The ANOVA summary table below is the result of a regression of sales on year of sales. Is the relationship statistically significant at .05? Comment.

  Find probability to see a sample mean greater than x bar

Suppose you take a random sample of 15 bearings and compute xbar = 8.2535. What is the probability that you will see a sample mean greater than xbar?

  Suppose we want to design a new placebo-controlled trial

Suppose we want to design a new placebo-controlled trial to evaluate an experimental medication to increase lung capacity. The primary outcome is peak expiratory flow rate, a continuous variable measured in liters per minute. The primary outcome will..

  Probability that file transfer needs more than ten packets

Assuming that an IP packet has a maximum 900 byte payload, determine the following. What is the probability that a file transfer requires more than 10 packets? repeat for 100 or more?

  How do i find fisher information matrix of n iid random

how do i find fisher information matrix of n iid random variables x1... xn of a gamma distribution with parameter alpha

  The rates of on-time flights for commercial jets are

the rates of on-time flights for commercial jets are continuously tracked by the u.s. department of transportation.

  Determine gmat scores

What is the point estimate of the students mean salary? What is the point estimate of the standard deviation of the students salaries? Construct a 95% confidence interval for the mean salary of the DM students?

  What is the population

Jackie is hired by a book publisher to check the spelling of every word in the latest proof of a history book. With regard to Jackie's assignment, what is the population?

  Decision about the null hypothesis

What is your null hypothesis? What is your alternative hypothesis? What your decision about the null hypothesis?

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