Mathematics
Mathematics, 29.06.2019 15:00, laniflower737

In the following proportion, what does x equal? a. 4.6 b. 5.4 c. 6.1 d. 6.8

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Mathematics, 22.06.2019 19:10, josephrosanne18
In a poll of registered voters nationwide, 43% of those polled blamed oil companies the most for the recent increase in gasoline prices. the margin of error for this poll is 2.4%. what does this represent? a. the sample proportion likely falls within 2.4% of the population proportion. b. the sampling distribution of the sample proportion has a standard deviation equal to 0.024. c. the sample proportion likely falls within 2.4% of the population proportion, which is between 0.406 and 0.454. d. all of these are representative. e. the population proportion is between 0.406 and 0.454.
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Mathematics, 08.07.2019 20:00, alialoydd
Sonny substituted 5 for x in the proportion 16/x=48/15 and cross multiplied to get 240=240. why is this? a.because the cross sums of the proportion are equal b.because the cross differences of the proportion are equal c.because the cross products of the proportion are equal d.because the cross quotients of the proportion are equal
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Mathematics, 19.07.2019 20:30, kalbaugh
Agenetics experiment involves a population of fruit flies consisting of 1 male named bart and 3 females named charlene, diane, and elaine. assume that two fruit flies are randomly selected with replacement. after listing the possible samples and finding the proportion of females in each sample, use a table to describe the sampling distribution of the proportion of females. a. proportion of females probability 0 0.5 1 (type integers or fractions.) b. find the mean of the sampling distribution. (round to two decimal places as needed.) c. is the mean of the sampling distribution (from part (b)] equal to the population proportion of females? if so, does the mean of the sampling distribution of proportions always equal the population proportion? oa. no, the sample mean is equal to the population proportion of females. these values are not always equal, because proportion is a biased estimator. o b. no, the sample mean is equal to the population proportion of females. these values are not always equal, because proportion is an unbiased estimator o c. yes, the sample mean is equal to the population proportion of females. these values are because proportion is a biased estimator. o d. yes, the sample mean is equal to the population proportion of females. these values are always equal, because proportion is an unbiased estimator. always equal, click to select your answer(s). ?
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Mathematics, 09.10.2019 02:30, jobmoon
When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. assume that those four outcomes are equally likely. construct a table that describes the sampling distribution of the sample proportion of girls from two births. does the mean of the sample proportions equal the proportion of girls in two births? does the result suggest that a sample proportion is an unbiased estimator of a population proportion? for the entire population, assume the probability of having a boy is one half , the probability of having a girl is one half , and this is not affected by how many boys or girls have previously been born. determine the probabilities of each sample proportion. sample proportion of girls probability ▼ nothing ▼ 0.5 0.75 0.25 nothing ▼ 0.75 0.5 1 nothing (type integers or simplified fractions.) does the mean of the sample proportions equal the proportion of girls in two births? a. yes, both the mean of the sample proportions and the population proportion are one third . b. yes, both the mean of the sample proportions and the population proportion are one fourth . c. no, the mean of the sample proportions and the population proportion are not equal. d. yes, both the mean of the sample proportions and the population proportion are one half .
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In the following proportion, what does x equal? a. 4.6 b. 5.4 c. 6.1 d. 6.8...

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