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1. For the statistical package that you intend to use, write out how data can be entered, how random numbers can be generated, and how missing values can be identified.
2. Write the small data set for the four males given in this chapter into an EXCEL spreadsheet and then enter the data from the spreadsheet into a statistical program.
3. If a data set has results on breast cancer that include information on age, gender, and use of hormones, what checks should be made on the results to ensure that errors in recording data have not been made?
How large a sample of one-bedroom apartments would be needed to estimate the mean within $20 with 90% confidence?
Census Bureau data show that the mean household income in the area served by a shopping mall is $62,500 per year. A market research ?rm questions shoppers at the mall to ?nd out whether the mean household income of mall shoppers is higher than tha..
the image of the public library is constantly changing and their online services continue to grow. usage of the
Find (i) the percentage of batteries with a life time of at least 470 hours (ii) the proportion of batteries with life time between 385 and 415 hours. (iii) the minimum life of the best 5% of batteries.
A consumer organization wants to know if there is a difference in the price of a particular toy at three different types of stores. The price of the toy was checked in a sample of five discount toy stores, five variety stores, and five department ..
How would you define "the best fit line" in scatter plot of regression analysis?
Faced with rising fax costs, a firm issued a guideline that transmissions of 10 pages or more should be sent by 2-day mail instead.
an urn contains n balls k black and n-k white. a random sample of size n selected without replacement and the random
A rigid vessel contains 5 kg of saturated liquid water and 0.5 kg of saturated vapor at 10 kPa. What amount of heat must be transferred to the system to evaporate all the liquid?
Calculate the P-value for the test of the hypothesis p1 - p2=0. Let p1 represent the population proportion of eligible students in Pennsylvania.
(a) Let X be the number of field goals that Mimi scores in the game. As we know, the distribution of X is a binomial probability distribution. What is the number of trials (n), probability of successes (p) and probability of failures (q), respect..
Developing the histogram and pie chart for the sample data.
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