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Nuts. A company says its premium mixture of nuts contains 10% Brazil nuts, 20% cashews, 20% almonds, and 10% hazelnuts, and the rest are peanuts. You buy a large can and separate the various kinds of nuts. Upon weighing them, you find there are 112 grams of Brazil nuts, 183 grams of cashews, 207 grams of almonds, 71 grams of hazelnuts, and 446 grams of peanuts. You wonder whether your mix is significantly different from what the company advertises.a) Explain why the chi-square goodness-of-fit test is not an appropriate way to find out.b) What might you do instead of weighing the nuts in order to use a test?
Assume the population variances of the two groups are equal and verify that the estimate of this common variance is 11.25.
On each draw, you bet half of your present fortune that you will draw a white ball. What is your expected final fortune?
a card is drawn from a standard deck of 52 playing cards. a. find the probability that the card is an ace or a king. b.
ll subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data.
Place a 95% confidence interval about the population mean number of down hours per month.
Find the percent of a standard Normal model found in the given region. Round to the nearest hundredth of a percent.
Construct a graph of the probability distribution of X. What is the probability that a child receives exactly three diagnostic services during and office visit to a pediatric specialist?
Does the distribution of the body masses appear to follow a normal distribution? Provide both a graphical and quantitative assessment.
The summary statistics were n = 32, x‾ = 22.4. Is there any evidence to suggest the fertilizer improves the thickness of an average lawn? Assume σ = 2.7 and use a = 0.005.
Is there any evidence to suggest that more than half of all people have trouble sleeping during a full moon? Use a = 0.05.
the acme light bulb company claims that the lifetimes of its 100-watt light bulbs follow a normal distribution with a
the following sample was obtained from a population with unknown parameters.scores 612034.a. compute the sample mean
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