Estimate a population or proportion or percentage
Use the given data to find the minimum sample size required to estimate a population or proportion or percentage.
Margin of error: 0.02 confidence level: 90% p hat q Hat n= round to nearest integer
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Being a wise student of statistics, you decide to stand back and observe the outcome of the next ten games before deciding whether to pay your three dollars to play the game. You have just conducted an informal hypothesis test. State the null and
One concern about the depletion of the ozone layer is that the increase in UV light will decrease crop yields. An experiment was conducted in a green house where soybean plants were exposed to varying levels of UV levels
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Since the P Value is (greater or less) than the level of significance (reject, or not reject) null hypothesis. There is or is not sufficient evidence to conclude that the fund has moderate risk at the 0.05 level of significance.
IQ scores have a mean of 134. A sample of 13 people had a mean IQ of 129 with a SD of 9. Find the value of the test statistic. Round to three decimals.
The mean price of ground beef in 75 cities in the midwest is 2.11 and teh standard deviation is .56. a midwest grocer is selling ground beef for 3.25. What is the price in standard units? Assuming the empiracle rule applies would the price be unus
Suppose a recent poll of American Househoolds about pet ownership found that for households with one pet, 39% owned a dog, 33% owned a cat, and 7% owned a bird. suppose that three households with one pet are selected randomly and with replacement
A researcher wishes to estimate, with 95% confidence, the proportion of adults who have high-speed internet access. Herestimate must be accurate within 1% of the true proportion.
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