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In a study of the effectiveness of certain exercises in weight reduction, a group of 16 persons engaged in these exercises for one month and showed the following results:
Use the 0.05 level of significance to test the null hypothesis μ1 - μ2 = 0 against the alternative hypothesis μ1 - μ2> 0, and thus judge whether the exercises are effective in weight reduction.
A card is randomly selected from a standard deck. Find the probability that the card is between four and eight (inclusive) or is a club.
in a survey of 1954 cellphone owners adults aged 18 and over 743 reported that they use their phone to keep themselves
What is the probability that the mean life-span of a sample of 64 randomly selected bulbs will exceed 727 hours?
The maximum distance at which a highway sign can be read is determined for a sample of young people and a sample of older people. The mean distance is computed for each age group. What is the most appropriate null hypothesis about the means of the..
an artist sells her works at the east lansing art festival. suppose that 5 of those who stop by her booth will buy a
as we all know correlation does not imply causation. on other words if x and y are correlated it doesnt necessarily
randomly selected students participated in an experiment to their ability to determine when one minute or sixty
Its known that 5% of all AA bateries made by Power Manufactures are defective. AA batteries are sold in packs of 4. Find the probability that a pack of 4 has exaclty 2 defective batteries.
What is Picasso"s Pantry"s degree of operating leverage? If sales increase by 5%, what will the new operating income be?
questionc1-tinternetgdpco2cellularfertilityliteracyalgeria0.656.0930.32.858.3argentina10.0811.323.819.32.496.9australia3
1. determine the number of ways in which a jury of 6 men and 6 women can be selected from a group of 14 men and 13
an abrupt transition occurs at a reynolds number of about 3x105 where the drag on a sphere moving through a fluid
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