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A survey was conducted to measure heights of U.S. men. In survey respondents were grouped by age. In the 20-29 age group the heights were normally distributed with the mean of 69.5 inches and standa
Suppose the levels of variables are quantitative and large from low to high levels. Indicate orthogonal trends on variable which are capable of being tested using f ratio. Report sum of squares,degr
A developmental psychologist would like to know whether there is a difference in the sociability scores of children according the number of siblings they have.
Find out the mean and standard deviation of hypergeometric dist. With the parameters n=3. a=4, and N=8
A developmental psychologist would like to know whether there is a difference in sociability scores of children according the number of siblings they have. He chose three random samples of n = 5 chi
Given a sample of female students, n = 7, with SS = 550, and a sample of male students, n = 10. with SS = 720: Calculate the estimated standard error for the sample mean difference. Please provide det
Two players are gambling with a pair of dice. The dice are to be tossed. Player 1 wins $7 dollars from player 2 if the maximum the die faces is odd. Player 1 loses $5 dollars to player 2 if the maxi
Identify the population and the sample. A survey of 791 vacationers for the united states found that they planned on spending at least $2000 for their next vacation.
Determine the P-value for the test? Give your answer to four decimal places.
A survey of 791 vacationers from united States found that they planned on spending at least $2000 for thier next vacation. Determine the population and the sample. Please explain
A study of the ages of 535 members of U.S. Congress. Decide on which technique of data collection you would employ to collect data for the study. Describe your answer please
A production procedure that fills 12-ounce cereal boxes is known to have a population standard deviation of 0.009 ounce. If a customer protection agency would like to determine the mean fill
Based upon 12,500 responses from the 42,000 questionnaires sent to its alumni, a major university estimated that annual salary of its alumni was $96,500 per year. What sampling method is employed?
Find out the probability that an all weather tire selected at random exceeds 40,000 miles of tread life? Find out the probability that a high performance tire selected at random exceeds 40,000 miles o
A researcher is interested in determining the noise levels in decibels at area urban hospitals. She wants to be 95% confident that her estimate is correct. If the standard deviation is 4.65, how lar
The number of calls coming to the call center follows Poisson distribution. On the average 90 calls arrive every hour on Mondays between 10 and 11 a.m. This means that mean number of calls per minut
Which of the following statements regarding Poisson distribution are correct? The Poisson distribution is the discrete probability distribution. The Poisson distribution is employed in describing the
Employ the range rule of thumb to determine a range of values containing the usual number of peas with the green pods given the following:
A production system with 5 production lines produces thousands of items per day. From the past experience it is known that one of every 10 products coming out of each and every production line is de
There is a Box has 3 dimes and 4 quarters. you intent to select three of these coins at random without replacement.Define a random variable K as the total monetary value of the three selected coins.
Find out that margin of error. (90% confident margin of error) In general, if all other features of the situation remain the same, would smaller samples produce smaller or larger margins of error?
Assume x is a binomial random variable with n=100 and p=0.6. The mean, variance, and standard deviation of x are respectively:
Suppose that the population of heights of female college students is approximately normally distributed with mean m of 68.66 inches as well as standard deviation s of 5.13 inches. A random sample of
A communication satellite system can function if at least 2 of the 5 power sources in the system work properly. Each power source works independaently with probability .90. The probability of the sa
Statistics show that approximately 40% of all fatal automobile accidents involve drunk driving. Of the next 5 fatal car accidents on the highway of a city, the probability that 2 of the accidents we