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In a string of 100 Christmas lights, there is a .011 chance that a given bulb will fail within the first year of use (if one bulb fails, it does not affect the others).Find the approximate probability that five or more bulbs will fail within the first year. (Round your answer to 4 decimal places.)
While dealing with 16 students, suppose that the alternative hypothesis has been one-sided and that it was set as Ha :
ssume that these distributions are distributed as normal random variables with the means and standard deviations given previously. Find the probability that the return for common stocks will be greater than 8%.
Build regression models for predicting house prices. We will be using data collected on 91 houses in Gainesville, Florida. The dataset contains the selling price of each house and information on four other explanatory variables.
Does the data prove a significant difference in mean times?
A random sample of 20 single men was asked if they would welcome a woman taking the initiative in asking for a date. What is the probability that
Setup Null and Alternate hypotheses to test if average amount of soda in each can is less than 32 oz. Test the hypothesis using a = 0.05. What can you conclude from all this?
The 1996 GSS asked, "If husband in family wants children, but wife makes decision that she doesn't want any children. If standard error is 0.01429, determine the 96 % confidence interval for population proportion who would say yes.
The probability that the residents?own 2 cars is 55%. Of the households surveyed, 60% had incomes over $50,000. The probability that the? residents of a household own 2 cars is?
An investment project is expected to earn $100,000 on average with a standard deviation of $50,000. Assume earnings from this investment project is a normal distribution. Of the next 15 people that invest in this project, what is the probability t..
Can researcher conclude that humidity has significant effect on eating behavior? Use a two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each loation.
Compute and interpret each of the statistics in parts(a) through (f) Mean and Median.
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