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!
A recent article concerning bullish and bearish sentiment about the stock market reported that 41% of investors responding to an American Institute of Individual Investors(AAII) poll were bullish on the market and 26% were bearish. The article also reported that the long-term average measure of bullishness is .39 or 39%. Suppose the AAII poll used a sample size of 450. Using .39 (the long-term average) as the population proportion of investors that are bullish, conduct a hypothesis test to determine if the current proportion of investors that are bullish is significantly greater that the long-term average proportion.
a. State the appropriate hypotheses for your significance test.
b. Use the sample results to compute the test statistic and the p-value.
c. Using a=.10 what is your conclusion?
Construct a 95% confidence interval for the difference in the proportions of women and men who have regular exercise programs.
Determine the likelihood of accepting a lot which is 1% defective?
Find a 99% confidence interval for the population mean number of weekly miles.
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
At the .05 significance level, can we conclude that there is a difference in their mean times?
To speed up the process in a blood testing procedure, blood samples from 3 people are combined into one mixture. The mixture will only test negative if all the individual samples are negative.
How many individuals will it need to sample to achieve this level of accuracy and confidence?
If you assume returns follow a normal distribution, which investment would give a better chance of getting at least a $40 million return? Explain how your answer could change if you knew returns followed a skewed distribution instead of a normal d..
From the above function, it can be said that the expected yearly income of and find the multiple coefficient of determination
Let x be average number of employees in group health insurance plan and y be average administrative cost as percentage of claims. Determine sample correlation coefficient.
Conclude the finite population, correction factor.With the population size of 1,000 and a planned sample size of 200, what is the finite population, correction.
Research question: Are the mean crash damages the same for these three vehicles?
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