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A coin was flipped 12 times and came up heads 7 times.
Calculate a p-value for the observed sample outcome, using the normal distribution. (Round your z-value to 2 decimal places. Round your answer to 4 decimal places.)
Use Excel to calculate the binomial probability P(X ≥ 7 | n = 12, = 0.50) = 1 - P(X ≤ 6 | n = 12, = 0.50). (Round your answer to 4 decimal places.)
Calculate the mean, median, mode and standard deviation for the salaries rounded up to the nearest thousand of dollars
the makers of compute-all know that in the past 40 of their sales were from people under 30 years old 45 of their sales
Assume the population mean weight per sheet slips to 9 pounds. Determine the probability that the sample will indicate an adjustment is not needed.
Perhaps you have a millionaire, someone making $30,000 and a lot of people spread out all over (and evenly) in between. How would this need to change for median to be a better measure?
How would you decide whether or not to drop the free telephone consultation service provided by your company's brand of computer software?
How are the degrees of freedom computed for the goodness-of-fit test? How are the expected values computed for the goodness-of-fit test?
We want to estimate the population mean within 5, with a 99 percent level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?
What is the standard deviation of the sampling distribution of p(hat) the proportion of all rolls of the die that show a 1 or a 2? 3.) describe the shape of the sampling distribution of p(hat).
What proportion of the 25 samples had exactly 0 bad records? Remember that probability tells us only what happens in the long run.
Madan has scored 83.0 on the test. What is the probability that he will be paired with someone whose score was within 5.0 points of his own?
1. a 2004 survey of randomly sampled utah residents found that 10.5 0.105 of them smoked regularly.a suppose you survey
when n 20 and p 0.1 i can approximate the distribution of the sample proportion with a normal distribution with mean 2
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