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Based on historical data in Oxnard college, we believe that 32% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to estimate the proportiton of freshmen who do not visit their counselors regularly. You would like to be 95% confident that your estimate is within 3% of the true population proportion. How large of a sample size is required? Do not round mid-calculation.
an examination is conducted entirely by multiple choice questions. there are 100 questions and 3 answers are shown for
The number of choco chips in an 18 ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1256 and a standard deviation of 129 chips, What is the probability that a randomly selected bag contains fewer than 1000 c..
Problems on Sampling Variability and Standard Error and Confidence Intervals
Assume you have your own electricity bills for the last three years and that you have lived in the same house.
If we wish to compare the typical numbers of accidents for these men and women, should we compare the means or the medians? Why?
At the 0.10 significance level, is there a difference in the variability of the vaccination rates between males and females?
What can you conclude about the relationship between the two variables - What can you conclude about the relationship between the two variables
What is the probability that the wine cooler would be less than 45 degrees? (No decimals, only whole numbers to represent the percentage)
A manufacturer of coil springs is interested in implementing a quality control system to monitor his production process. Construct a time series plot of the data
Define the term hypothesis testing and explain the procedure generally followed in testing hypothesis and State the twobasic statistical laws upon which
Trimming 10% mean when we discard the smallest and largest 10 % of the sample. Can we use that sample for to calculate the point estimate of population mean?
Conduct a sign test to determine whether there is any evidence to suggest that the median survival at D'Youville is greater than 4.6 years.
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