Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. The mean of a normal distribution is 408 pounds. The standard deviation is 13 pounds. What is the area between 424 pounds and the mean of 408 pounds?
a) 0.3908
b) 0.1954
c) 0.2736
d) 0.7816
2. What is the percentage of the total area under the normal curve within plus and minus 1.6 standard deviations of the mean?
a) 29.68%
b) 17.81%
c) 89.04%
d) 44.52%
3. The mean amount spent by a family of four on food per month is $501 with a standard deviation of $73. Assuming that the food costs are normally distributed, what is the probability that a family spends less than $418 per month?
a) 0.2556
b) 0.3834
c) 0.1278
d) 0.8722
4. An accounting firm is planning for the next tax preparation season. From last year's returns, the firm collects a systematic random sample of 100 filings. The 100 filings showed an average preparation time of 88 minutes with a standard deviation of 142 minutes. What is the probability that the mean completion time is between 1 and 2 hours, i.e., 63 and 115 minutes?
a) 0.9322
b) 0.9714
c) About 1
d) 0.4857
5. The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 106 and a standard deviation of 14. What is the probability that a person would score 132 or more on the test?
a) 0.9684
b) 0.4684
c) 0.9484
d) 0.0316
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
the mathematics department is interested in observing the performance of their first-year undergraduate students. the
Jerry however is unsure the 0.6 probability of a favorable marketing research study is correct. How sensitive is Jerry's decision to this probability value ? How far can this probability value deviate from 0.6 without causing Jerry to change his d..
in a study investigating the effect of car speed on accident severity 5000 reports of fatal automobile accidents were
Formulate a linear program that can be used to determine the number of hours each graphic designer should be assigned to the project in order to minimize total cost. What is the total cost?
What are the mean and standard deviation of the proportions of random samples of 400 motorcylce owners who own Harleys?
an import threshold for mercury in crayfish is 9 parts per billion ppb. a study obtained a random sample of 120
Work through a simple regression calculation using intrinsic job satisfaction nd extrinsic job satisfaction. Select thirty data points to use for each group.
When do you use a one-tailed test? How do you find the critical values for one-and two tailed tests? When do you reject the null hypothesis? Under what circumstances is the null accepted?
According to a survey reported in the Business Week, 30% of adults in the U.S. said that the cell phone is the invention that they hate most but cannot live without.
An urn contains 8 green balls, 5 red balls, and 7 white balls. How many ways are there to draw a green ball or a red ball?
If it costs 1 cent to make a liver-flavored biscuit and 2 cents to make a chicken-flavored one, what is the optimal product mix for a package of the biscuits in order to minimize the firm's cost?
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd