Mathematics, 11.03.2020 04:35 balletbella0531
A professor believes the students in a statistics class this term are more creative than most other students attending the university. A previous study found that students at the university had a mean score of 35 on a standard creativity test, and the current class has an average score of 40 on this scale with an estimated population standard deviation of 7. The standard deviation of the distribution of means is 1.63. What is the t score?
A. (40 – 35) / 7 = 0.71
B. (40 – 35) / 1.63 = 3.07
C. (40 – 35) / 7² = 5 / 49 = 0.10
D. (40 – 35) / 1.63² = 5 / 2.66 = 1.88
Answers: 3
Mathematics, 21.06.2019 20:30
Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.
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Mathematics, 22.06.2019 00:00
Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.
Answers: 2
Mathematics, 22.06.2019 01:50
Order the equations from least to greatest based on the number of solutions to each equation.-4^x -1 = 3^(-x) – 2 -3x + 6 = 2^x+13^x – 3 = 2x - 2
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