Mathematics, 12.12.2020 18:40 Aryanagillman6133
A researcher claims that the average weight lost after a program of diet and exercise
is the same for men and women. An experiment was conducted to compare weight lost of
men and women. Two groups of overweight dieters were randomly selected. The first sample
contained 30 women and came from a population with a standard deviation of 2.6 lb. The
other sample was formed by 40 men. The standard deviation of the population of men is
1.9 lb. Their weight losses were recorded over a 90-day period. The average weight losses of
the women’s sample is 21.3 lb, while the average weight losses of the men’s sample is 18.4
lb. At α = 0.05 is the researcher correct?
Answers: 2
Mathematics, 21.06.2019 16:30
The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms
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Mathematics, 21.06.2019 17:00
In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.
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Mathematics, 21.06.2019 17:00
Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.
Answers: 1
A researcher claims that the average weight lost after a program of diet and exercise
is the same f...
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