Mathematics, 31.05.2021 17:50, Jasmineos
A study was conducted to investigate whether the mean numbers of snack bars sold at two airport convenience stores, C and D, were different. For ten randomly selected days, the number of snack bars sold at each store was recorded, and the sample mean number of snack bars for each store was calculated. A two-sample t-test for a difference in means will be conducted. Have all conditions for inference been met?
A. Yes, all conditions have been met.
B. No, the data were not collected using a random method.
C. No, the sample sizes are greater than 10 percent of the population.
D. No, the sample sizes are not large enough to assume normality of the sampling distribution.
E. No, the distribution of the population is known to be skewed.
Answers: 2
Mathematics, 21.06.2019 20:00, alisonlebron15
An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years
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Mathematics, 22.06.2019 02:00, joejoefofana
The trapezoid is composed of a rectangle and two triangles. what is the area of the rectangle? what is the total area of the triangles? what is the area of the trapezoid? a) 48 cm2; 32 cm2; 80 cm 2 b) 48 cm2; 16 cm2; 64 cm 2 c) 128 cm2; 32 cm2; 160 cm 2 d) 128 cm2; 16 cm2; 144 cm 2
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A study was conducted to investigate whether the mean numbers of snack bars sold at two airport conv...
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