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A resent report indicated an average family of four 2 parents and 2 children under the age of 16, spends $500 per month on gaoline. Assume the distribution of gasoline consumption expenditures for a family of four follows the normal distribution, with a standard deviation of $75 per month. round your answer to 2 decimals.
a. What percent of families spend more than $45 but less than $500
b. What percent of the families spend less than $425
c. What percnet spends between $425 and $575
d. What percent spends between $575 and $650
The power generated by a solar electric generator is normally distributed with mean 15.6 kilowatts and standard deviation of 4.1 kilowatts. We may be 95% sure that the generator will deliver at least how many kilowatts?
Drawing on one of your interests in the study of criminal justice, develop three hypotheses that can be tested using t-tests. Why do you think it would be interesting or important to test these hypotheses?
suppose you have 22 shoes in a basket 5 identical pairs of sneakers 4 identical pairs of sandals and 2 identical pairs
A local bank reported to the federal government that its 5,246 saving accounts have a mean of $1,000 and standard deviation of $240.
Provide an example of a situation from your personal or professional experience where an two-sample test of hypothesis of dependent samples would be useful in a decision-making process.
case problem property purchase strategyglenn foreman president of oceanview development corporation is considering
Regarding absences for that year: 4, 4, 3, 2, 6, 8, 7, 1, 9, 3, 1, and 6. At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
Some researchers have conjectured that stem-pitting disease in peach tree seedlings might be controlled with weed and soil treatment. An experiment was conducted to compare peach tree seedling growth with soil and weeds treated with one of two her..
you conducted a chi-square goodness of fit test in your asci 691 capstone project. unfortunately you did not get the
The president of the wholesale distributor is concerned about the possibility of stockouts causing a loss of customer confidence and loyalty and is interested in maintaining safety stock in inventory to prevent potential stockouts.
Determine the least squares line and forecast Y for an average weekly temperature of 63 - Is this a realistic value for the population mean of the client's account? Explain.
There are two telephone lines A and B. Let E1 be the event that line A is being used and E2 be the event that line B is being used
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