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A-the middle 99.7% of males scored between what two values. B-what about the females, C-to get admiited to an ivy league univeristy you should have a minium math score of 710 what is the probability
The Beer institue conducted a study with looking at beer purcheses per capita across states. Some states buy more beer (43 Gallons PP in New Hampshire) Data is normally distributed with an average o
Agents at an insurance company office in a small town process an average of fifteen auto insurance claims per week. Assuming that the number of claims per week is a Poisson random variable.
The following is the heart rate for 10 randomly selected patients on the unit. Find the mean, variance, and standard deviation of the data using the descriptive statistics option in the data analysi
Heights of women have a bell-shaped distribution with a mean of 156 cm and a standard deviation of 8cm using the Chebyshev's theorem what do we know about the percentage of women with heights that a
Compute the following binomial probabilities using Table A.1, a table of Cumulative Binomial Probabilities, in the back of the text. Give your answers to 3 decimal places, without the leading zero,
What is the mean amount of daily pocket money his son receives? Enter the result in cents to 2 places after the decimal, without the units, i.e. xx.xx
Use exponential smoothing with alpha = .2 and the smoothed forecast for July is 32. Determine the smoothed forecast for August.
Partition 100 numbers from 0 to 99 according to the probability of each demand value, starting with 0. A number from the 100 numbers is going to be selected. What is the corresponding demand value i
Consider an experiment where we study the ability of snails tohold firmly onto a smooth substrate. We would like to know ifthe species of snail is independent of the ability.
If the data yielded a sample mean of 19.3 minutes with a standard deviation of 5.2 minutes, estimate the true mean time and calc ulate the margin of error.
Construct now the 95% confidence interval for the difference p1-p2. Could you conclude that p1 and p2 are different ? Explain your answer.
Construct a 95% confidence interval for mu1 (213,872) -- Standard deviation: 69,261, the expected price of real estate in the zone1 and for mu2 (256,684) -- Standard deviation: 93,192, the expected
Give all answers to four decimal places. There are four different blood types that people have A, B, AB and O. We will take a random sample of 15 people and conduct a test of H0: p = 0.45 vs Ha: p &
In many ways, comparing multiple sample means is simply an extension of what we covered last week. What situations exist where a multiple (more than two) group comparison would be appropriate?
Several statistical tests have a way to measure effect size. What is this, and when might you want to use it in looking at results from these tests on job related data?
Suppose that when the sample is taken, 21 of the 25 graduates have some student loan debt. Do you believe the administrator's claim? Explain why or why not using probabilities.
Create a table for the probability distribution for the random variable X, the number of new employees Amy will have to hire. Compute the expected value of the number of new employees Amy will hire fo
Heights of women have a bell-shaped distribution with a mean of 156 cm and a standard deviation of 8cm using the chevyshev's theoriem what do we know about the percentage of women with heights that
Nurses wondered if birth weights of babies are going up. They knew that the average birth weight of a baby last year was 7.6 pounds. A random sample of 15 weights of babies at the hospital where the
The distribution of sample means will not be normal even though the population data followed a normal distribution because the sample size is less than 30
Based on interviews with 83 SARS patients; researchers found the the mean incubation period was 4.3 days with a standard deviation of 14.2 days. Based on this information, construct a 95% confidence
A television sports commentator wants to estimate the proportion of citizens who follow professional football.
A researcher wishes to estimate the proportion of adults who have high speed internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 99% confidence if