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Book/movie review
22/08/2022
1-
If the 70th percentile for a set of exam scores is 82, what does this mean?
A) At most 82% of the exam scores are smaller in value than 70
B) At most 70% of the exam scores are smaller in value than 82
C) At least 70% of the exam scores are larger in value than 82
D) At least 82% of the exam scores are larger in value than 70
2-
Six executives were asked what their base salary was for the previous year, the results are as follows, in $100,000: (for all answers do not include x$100,000)
3, 15, 2, 1, 4, 5
Calculate the mean base salary for these 6 executives:
Calculate the median base salary for these 6 executives (round to 2 decimal place)
If the standard deviation is 5.1, calculate the variance (round to 3 decimal places)
In this situation, which seems to be a better measure of central tendency, median or mean?
3-
For a particular sample of 80 scores on a chemistry exam, the following results were obtained:
Mean = 68 Mode = 74 Standard Deviation = 11
Range = 52 First Quartile = 58 Third Quartile = 84
What percent of the exam scores were between 58 and 84?
A) 75%
B) 68.2%
C) 25%
D) 50%
4- Sixty-two percent of drivers in a major city admit to having talked their way out of a speeding ticket. If a group of 6 drivers were selected at random from this city, what is the probability that exactly 5 of the 6 would admit to having talked their way out of a speeding ticket? (round to 3 decimal places, enter as 0.xxx)
answer?
In another city 70% of drivers admitted to talking their way out of a speeding ticket. If a group of 12 drivers were selected at random from this city, what is the probability that 4 or less would admit to having talked their way out of a speeding ticket? (round to 4 decimal places and use the binomial tables in your textbook, enter as 0.xxxx)
answer?
The writer is very fast, professional and responded to the review request fast also. Thank you.
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