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Consider the formula employed for any confidence interval and elements included in that formula. What takes place to the confidence interval if you (a) raise the confidence level, (b) raise the samp
What average weights for sample of 16 people will result in the total weight exceeding weight limit of 1250kg?
Determine the probability of judging the coin biased when it is actually fair?
Three numbers are drawn at the random and without replacement from the set {1,2,3,4,5}. By listing outcomes, find out the joint distribution of the minimum, median, and maximum of the numbers. What
Determine the distinction between SS within treatments & SS error in a repeated measures ANOVA?
Determine the probability that this growing season, the market price will exceed $3.25 per pound? Determine the 10th percentile of yam prices?
A set of data is normally distributed with mean of 1000 and standard deviation of 100.
Suppose that the population of heights of female college students is approximately normally distributed with mean m of 67.26 inches and standard deviation s of 5.96 inches. A random sample of 78 hei
Assume that the population of heights of female college students is approximately normally distributed with mean m of 67.26 inches and standard deviation s of 5.96 inches. A random sample of 78 heig
An institute constructed a poll of 1014 adults, 48% of whom were men. The poll results show that 12% of men and 33% of women fear flying. After constructing a contingency table which summarizes the
Let U be a uniform random variable on the interval [0,1]. Let X= U^1/5. Find a function g(x) so that g(U) is an exponential random variable with parameter λ, and prove it is.
Given that a continuous random variable X has normal distribution with = 60 and = 4 Find the following probability.
For any generic t-test for independent groups, write down the null and alternative hypotheses that are appropriate at alpha =.05 (2 tail). Write a verbal and an equation version.
In a random sample of 740 Americans, 33.5% indicated that they've a cat for a pet. Determine with 94% confidence the proportion of all Americans that have cats as pets. (Give the confidence interval
A national exam is given yearly to fifth graders. At one school they found 3 to 5 times as many erasures as at other schools, and 89% of those erasures resulted in correct answers as compared to les
Determine the primary advantages of the Standard Normal Distribution that other normal distributions do not have?
In determining a 95% confidence interval estimate of average number of days absent for the company's workers last year what will be the standard error?
Suggest rolling two fair dice, one green and one red. Let R be the random variable which finds out the face value of the red die, and G be the random variable which finds out the face value of the g
Determine the value of the test statistic? Round to 2 decimal places.
A study of hospitals in the certain area determined that the mean patient length of stay in 2001 was 5.87 days with standard deviation of 1.5 days. Suppose the distrubtion of the patient stay is nor
What inferential statistic would you employ to calculate the difference between the two groups (t-test, ANOVA, chi-square)?
The lengths of time bank customers should wait for a teller are normally distributed, with a mean of 3 minutes and a standard deviation of 1 minute.
Find out the probability that the average salary for a sample of size 60 is between 39,200 and 44,750
Listed below are measured hardness indices from three different collections of gemstones.
Benford's law, also called first-digit law, describes that in lists of numbers from many (but not all) real-life sources of data, the leading digit is distributed in a specific, non-uniform way show