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Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about the environment. Assume that these concerns are normally distributed using the 50%- 34% - 14% figures. Appoxiatmaily what percentage of people have a score A. Above 48 B. Above55 C. Above 34 D. Above 41 E. Below 48 F. Below 55 G. Below 34 H. Below 41
The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution
When asked to construct numeric hypotheses, what does this entail? How does one format research questions and sub-questions?
Construct four questions, each question reflecting one of the four corresponding levels of measurement, that a mortgagor (borrower) would answer relevant to their home mortgage.
A sample of the length of time it took 42 persons to assemble the unit was organized into the following frequency distribution. What is the standard deviation (in minutes)?
If Belson Electronics's new converter produces less than the 110 volts of their old product, they must redesign it. A sample of 303 converters generated a mean of 107.2 volts, with a standard deviation of 47.3 volts. Set Alpha at 5 percent.
What is the probability that the person will be the last to leave the bank assuming no other customers arrive? Explain your answer fully.
Which distribution should be used to create 80% confidence interval?
In checking the quality of the work, she notices that some slight blemishes occasionally are apparent. A sample of 20 pieces of work resulted in the following number of blemishes on each piece:
Among 134 randomly selected students, 9.3% refused to respond on a survey on cheating while among 154 male college students, 14.6% refused to respond to the same survey. Determine test statistic, critical values, p-value, and conclusion.
Compute the Return to Risk Ratio (RRR). On the basis of the results of (A) - (C), which action should the vendor take - sell soft drinks or ice cream? Why?
If 1.5 million X-Games were sold over the holidays, determine an interval for the number of defectives in sales. 12,184 to 32,816.
Medical Red Blood Cell Volume. Total blood volume (in ml) per body weight (in kg) is important in medical research. For healthy adults, the red blood cell volume mean is about = 28ml/kg.
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