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Construct a frequency distribution table for the following set of scores. Include columns for proportion and percentage in your table.
A chemist is testing a newly proposed analytical method and decides to use the currently accepted method for comparison. She takes 12 specimens of unknown concentrate and determines the concentratio
Assume that the MM207 Student Data Set is a random sample of all Kaplan students; estimate the proportion of all Kaplan students who are male using a 90% level of confidence
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a re
Categorize the following variables as being continuous or discrete: Response time to flashing images
Cicadas are flying, plant-eating insects. One particular species, the 13-year cicadas (Magicicada), spemds five juvenile stages in underground burrows. During the 13 years underground, the cicadas g
An experiment is conducted to examine the effects of ingesting hot dogs, pizza, ice cream, sour milk, and carrot juice in one setting and the time it takes to get the first sign of an upset stomach.
Refer to the following computer output and verify that the equation of the line of best fit is y=13.4 + 2.3x and that s? = 10.17 by calculating these values yourself.
Your organization has a goal of 14 days for the average processing of a purchase request from notification to final approval. They are only concerned if it takes longer than 14 days.
An auditor of a small business has samples 70 of 900 accounts. The sample mean total receivable is $444, and the sample standard deviation is $89. Find a 98% confidence interval for the total amount
A random sample of 20 items from the first population showed a mean of 100 and a standard deviation of 15. A sample of 16 items for the second population showed a mean of 94 and a standard deviatio
Could you conclude that John Jay Professors live longer than average? Use the appropriate two-tailed test with an a = 0.05. Also, construct a 95% confidence interval. Do the statistical test and the
At the .05 significance level, is there a difference in the number of rounds played by day of the week?
A lorry load consists of 16 boxes, randomly chosen. Find the probability that a lorry-load will include at most 2 boxes which are substandard, giving three decimal places in your answer. Ans: 0.043
Manufactured articles are packed in boxes each containing 200 articles, and on average 1.5% of all articles manufactured are defective. A box which contains 4 or more defective articles is substanda
The research department at the home office of New Hampshire Insurance conducts ongoing research on the causes of automobile accidents, the characteristics of the drivers, and so on. A random sample
In a report on high school graduation, it was stated that 85% of high school students graduate. Suppose 3 high school students are randomly selected from different schools. What is the probability
The first 10 subjects who volunteer are assigned to the massed-practice condition; the next 10 are assigned to the spaced-practice condition. Discuss the consequences and seriousness of each of the
Give me an example of an Interval measurement scale.
A medical researcher is testing the effectiveness of a new drug for treating Parkinson's disease. Ten subjects with the disease are given the new drug and 10 are given a placebo (If you don't know w
A total of 797 nobel prizes had been awarded by 2007. 15 of the 101 prizes in literature were awarded to scandinavians. Scandinavians received a total of 55 awards. How many nobel prizes outside lit
What is the probability that in a group of 5, each person chooses a number between 1 and 10, inclusive, and at least 2 people pick the same number?
Justin estimates that the probability of passing math is 0.8 and the probability of passing English is 0.9. The probability of failing both is 0.05.
The probability that Pat will go to UofT is 0.2. The probability that Pat will go to Waterloo is 0.5. The probability that her and her boyfriend Gill will both go to UofT together is 0.15. What is t
The San Francisco Supply Company has designed a machine that fills containers of coffee in such a way that the contents are uniformly distributed with a minimum of 11.8 oz and maximum 12.2 oz. If on