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A supplier of ballpoint pens guarantees a low defective rate. Sara receives a shipment of 400 pens (and unknown to Sara, but known to you, exactly 12 are defective). Sara decides to randomly check 100 pens. Let X be the number of defectives Sara finds among the 100 randomly selected pens.
How would I find the mean and standard deviation of x?
State the null and alternative hypothesis and identify the claim - determine the graph of the sampling distribution that matches the test type.
The file MobileLoyaltycontains spending on products ($) during a three-month period by a sample of 15 customers receiving incentives through a mobile loyalty program. Compute the mean and median. Compute the variance, standard deviation, range, and..
Find the future value and compound interest. Use the? $1.00 future value table or the future value and compound interest formula.
data is the effect of reaction temp on the mole weight of resulting poly polyos.xpot temp yavg. mole weight165
suppose you estimate a model obtaining wage 0.620 0.506 times educ 2.27 times female were wage is measured in
The operations manager at a clothing factory needs to determine whether a new machine is producing a particular type of cloth according to the manufacturers.
Could you conclude that Queens College Professors live longer than average? Use the appropriate two-tailed test with an α = 0.05. Also, construct a 95% confidence interval. Do the statistical test and the confidence interval agree? Write up your resu..
Compute the p-value and interpret its meaning - Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
Carry out a hypothesis test to see if this claim may be refuted. State the null hypothesis and the alternative hypothesis that we would use for this test.
If the time of arrival of each person has a uniform distribution over the hour between 9:00 A.M. and 10:00 A.M.,
Their average age was 19.1 years with a standard deviation of 1.5 years. What is the best point estimate for the population mean?
Forty people were asked to rank the similarities between six diff erent types of sodas. The average similarity rankings are shown in given Figure. Use this data to create a two-dimensional perceptual map for sodas.
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