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For a particular sample of 53 scores on a psychology exam, the following results were obtained.First quartile = 44 Third quartile = 68 Standard deviation = 9 Range = 55Mean = 51 Median = 54 Mode = 71 Midrange = 64
Answer each of the following:
I. What score was earned by more students than any other score? Why?II. What was the highest score earned on the exam?III. What was the lowest score earned on the exam?IV. According to Chebyshev's Theorem, how many students scored between 57 and 93?V. Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 57 and 93?
If the sides of a square are lengthened bt 5cm, the area becomes 169cm2. Find the length of a side of the original square.
A researcher reports an F-ratio with df = 3, 36 from an independent-measures study. How many treatment conditions were compared in the study?
Inventory manager for Itex received wheels bearing from Wheel - Rite a small producer of metal parts , Unfortunately , Wheel -rite can only produce 500 wheel bearings from wheel rite each year.
Many newspapers carry a certain puzzle in which the individual must unscramble letters to form words. How many ways can the letters of YARNLE be arranged?
A standard deviation of 12.4. A local census taken several years ago shows the mean weight of adult women was 115 lbs. The df for determining tcrit
What is the difference between a sample and a population? When can the same information (e.g. the age of each of the ten students in our class) be considered both sample data and population data?
Provide an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Then explain your answer to someone who has never had course in statistics (but who is familiar with mean, standard deviation, and Z scores.)
If circuit switching is utilized, how many user can this access link support?
Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Use the p-value method for testing hypotheses.
It is reported that 45% of all college professors are extroverted. Suppose you have classes with six different professors. What is the probability that all six are extroverts?
What percent of the sales representatives earn more than $42,000 per year? What percent of the sales representatives earn between $32,000 and $42,000?
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