Calculus and Above

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Assume that when adults with smartphones are randomly​
Assume that when adults with smartphones are randomly​ selected, ​42% use them in meetings or classes. If 13 adult smartphone users are randomly​ selected, find the probability that fewer than 5 of th… read more
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Assuming boys and girls are equally likely, find the
Assuming boys and girls are equally likely, find the probability of a couple having a baby boy when their fourth child is born, given that the first 3 children were all boys. The probability is (Type … read more
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To the right are the outcomes that are possible when a
To the right are the outcomes that are possible when a couple has three children. Assume that boys and girls are equally​ likely, so that the eight simple events are equally likely. Find the probabili… read more
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When two births are randomly selected, the sample space for
when two births are randomly selected, the sample space for genders is b, bg, gb, and gg. assume that those four outcomes are equally likely. construct a table that descibes the sampling distribution … read more
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Determine whether the results appear to have statistical
Determine whether the results appear to have statistical significance and also determine whether the results appear to have practical significance Image listed below… read more
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A. In a recent year, the Better Business Bureau settled 75%
A. In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involv… read more
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A researcher wishes to estimate the percentage of adults who
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 99​% conf… read more
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A 0.1 significance level is used for a hypothesis test of
A 0.1 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender​ selection, the proportion of baby girls is different from 0.5. Assume that samp… read more
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A 0.1 significance level is used for a hypothesis test of
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To calculate sample size for random sample population, why
To calculate sample size for random sample population, why is population proportion assumed to be 0.5? How is sample size dependent on population proportion anyways?… read more
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A 0.05 significance level is used for a hypothesis test of
A 0.05 significance level is used for a hypothesis test of the claim that when parents use a particular method of gender​ selection, the proportion of baby girls is greater than 0.5. Assume that sampl… read more
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Find range, variance & standard deviation for sample data
I have 6 questions and i can only post them after you answer each questions because each question is divided to multiple questions. Listed below are the top 10 annual salaries​ (in millions of​ dollar… read more
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Refer to the sample data for pre employment drug screening
1. Refer to the sample data for pre employment drug screening shown below. If one of the subjects is randomly selected, what is the probability that the test result is a false positive? Who would suff… read more
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Statistics Questions1. One thousand out of two thousand registered
Statistics Questions 1. One thousand out of two thousand registered voters sampled indicated they planned to vote for the Republican candidate for the state's U.S. senator. Using 0.95 degree of confid… read more
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Math question. Why is it important to ensure that a population
Math question. Why is it important to ensure that a population sample is unbiased? In your own words, give an example in detail of how you would obtain an unbiased sample using one of the techniques l… read more
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Must Show work need it now 7 questions 1. Identify H0 and
Must Show work need it now 7 questions 1. Identify H0 and H1 the proportion of people aged 18-25 who currently use illicit drugs is equal to 20% 2. Finding Test statistic z, the claim is more than 75%… read more
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Explain a unique-real situation where probabilities exist.
Explain a unique-real situation where probabilities exist. Point out all of the outcomes, and the probabilities associated with each outcome.… read more
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Below are 8 questions that I need answers for. I do not need
Below are 8 questions that I need answers for. I do not need to see the work. I only need to have the correct answer. I have also provided the possible correct answers. 1. the mistake of rejecting the… read more
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