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Assume that IQ scores are normally distributed with a standard deviation of 15 points and a mean of 100 points. If 100 people are chosen at random, what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points.
Please show All work. Please.
You buy a new piece of equipment for $11,778 and you receive a cash inflow of 2,000 per year for 10years. What is the internal rate of return?
Plasma glucose levels are used to determine the presence of diabetes. Suppose the mean in (plasma-glucose) concentration (mg/dL) in 35-44 year olds is 4.86 with standard deviation = 0.54.
A telephone manufacturer wants its telescope to have standard deviation in resolution to be significantly below 2 when focusing on object 500 light-years away.
One objective of this course is learning how to correctly interpret statistical measures.
Assume the variable is normally distributed. If an individual is selected, find the probability that the individual's pressure will be between 120 and 121.8 mmHg.
Here is my data: these are the wages for women with a 2 yr degree, $11,702, $24,509, $34,746, $35,185 (median of $29,627) These are the wages for women with a 4 yr.
What information is provided by the numeral value of the Pearson correlation? What is the major distinction between the Pearson and Spear man correlations?
A savings account was opened for a baby on 1985 with a $100 deposit. No withdrawals or deposits occurred since the account was opened. The current balance of the account is $246.47. Measured in dollars of the year in which the account was opened, how..
Calculate the mean salary of the CFOs and base on measures of the center of the data; determine if the CFO salary data are skewed.
If person is selected at random determine the probability that he/she has enzyme level less than 4.0 units/ml?
11.9% reported they were in fair or poor health, including 10.5% of the married people, 19.6% of widows, 16.7% of divorced or separated, 12.5% of those never married, and 14% of those living with an unmarried partner.
for a population with a mean of micro 60 and a standard deviation of ? 24 find the z-score corresponding to each of
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