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How does the macroscopic silver that was deposited on the glass slide compare with the silver colloid particles with respect to its interaction with visible light? Describe.
a market research survey is available for no cost. using a decision tree analysis it is found that the expected value
When 343 college students are randomly selected and surveyed it is found that 110 own a car. find a 99% confidence level for the true population of all college students who own a car.
A large industrial firm uses 3 local motels to provide overnight accommodations for its clients. From past experience it is known that 20% of the clients are assigned rooms at the Ramada Inn, 50% at the Sheraton, and 30% at the Holiday Inn.
mcdonalds waiting times. you want to estimate sd for the population of waiting times at mcdonalds drive up windows. you
Create an accurate scatter plot of the data. This can be done by hand or using a program like Excel. Use Height as the x variable and Arm Span as the y variable. Does this graph show a linear relationship between x and y?
Find and interpret the probability that exactly 15 of those surveyed feel the state of morals is poor. The probability that exactly 15 of those surveyed feel the state of morals is poor is What?
Compute a 95% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24 and 59. Change the number from 59 to 24 and recalculate the confidence interval.
It is believed that the range of hourly wages paid to auto mechanics in a large city is $9 (range approx. = 4sigma-squared). If we assume that hourly wages are approximately normally distributed,
The average value observed was 1.2 mg. If the sample variance is 0.04 mg, compute a 99% confidence interval for the mean nicotine content.
She wants to compare this year=s team scoring records to last year=s.Last year=s team had a standard deviation of 1.0 for goal scoring against, with a mean of 4.5. In which year would you say the team is doing better? Why
an airline has a policy of booking as many as 23 persons on an airplane that can seat only 22. past studies have
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
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