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Gerolamo Cardano in his book, The Gambling Scholar, written in the early 1500 s, considers the following carnival game. There are six dice. Each of the dice has five blank sides. The sixth side has a number between 1 and 6 -a different number on each die. The six dice are rolled and the player wins a prize depending on the total of the numbers which turn up. (a) Find, as Cardano did, the expected total without finding its distribution. (b) Large prizes were given for large totals with a modest fee to play the game. Explain why this could be done.

Introduction to Probability

Expected Value and Variance

Expected Value

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Lien Le verified

Numerade educator

You decide to survey 100 adult Americans and find that 33 of people support legalizing gay marriage. Find the test statistic. Round to two decimal places. z=

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Qudsiya Anis verified

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You decide to survey 100 adult Americans and find that 73 of workers got their job through internet resume sites. Find the test statistic. Round to two decimal places. z= p-value =

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Hoan Nguyen verified

Numerade educator

Test the claim that the proportion of people who own cats is significantly different than 60% at the 0.2 significance level. The null and alternative hypothesis are? The test is?

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Qudsiya Anis verified

Numerade educator

Based on a sample of 300 people, 58% owned dogs. The test statistic is z= The p-value is:

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Qudsiya Anis verified

Numerade educator

You decide to survey 100 adult Americans and find that 20 of people own dogs. Find the test statistic. Round to two decimal places. z= What is the p-value? Round to 4 decimals. p=

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Areen Dabadghav verified

Numerade educator

Using "Gender" as your strata, take a stratified sample of birth months (sample size of 5), without repetition. Use a seed of 25.

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Hoan Nguyen verified

Numerade educator

In a sample of 210 adults, 187 had children. Construct a 90% confidence interval for the true population proportion of adults with children.

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Joanna Quigley verified

Numerade educator

If n=220 and (p-hat) = 0.81, construct a 90% confidence interval.

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Joanna Quigley verified

Numerade educator

Assume that a sample is used to estimate a population mean. Find the 99.5% confidence interval for a sample of size 47 with a mean of 22.5 and a standard deviation of 9.7. Enter your answer as an open-interval (i.e., parentheses) accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). 99.5% C.I. =

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Joanna Quigley verified

Numerade educator

If n= 16 (x-bar)=34 and s=6 construct a confidence interval at a 90% confidence level. Assume the data came from a normally distributed population. Give your answers to one decimal place. ____<μ<_____

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