Calculus and Above

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To investigate differences in sleep habits of graduate and
To investigate differences in sleep habits of graduate and undergraduate students, the amount of sleep of a random sample of 40 graduate students and 40 undergraduate students was recorded.Which type … read more
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A random sample of 375 bolts from machine A contained 41
A random sample of 375 bolts from machine A contained 41 defective bolts, while an independently chosen, random sample of 325 bolts from machine B contained 32 defective bolts. Let p1 be the proportio… read more
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A past survey of 1,068,000 students taking a standardized
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Given two independent random samples with the following
Given two independent random samples with the following results:n1=136 p1=0.45 n2=235 p2=0.63 Can it be concluded that the proportion found in Population 2 exceeds the proportion found in Population 1… read more
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A university financial aid office polled a random sample of
A university financial aid office polled a random sample of 951 male undergraduate students and 915 female undergraduate students. Each of the students was asked whether or not they were employed duri… read more
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Consider two independent random samples with the following
Consider two independent random samples with the following results:n1=225x1=87 n2=272x2=44 Use this data to find the 90% confidence interval for the true difference between the population proportions.… read more
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In a study conducted for an experimental nasal spray
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In a random sample of 125 large retailers, 90 used
In a random sample of 125 large retailers, 90 used regression as a method of forecasting. In an independent random sample of 160 small retailers, 80 used regression as a method of forecasting. Find a … read more
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A Reuters/Ipsos online poll randomly selected 1543 adults
A Reuters/Ipsos online poll randomly selected 1543 adults nationwide, including 1345 registered voters between July 2-6 2016. The registered voters were asked: If the 2016 presidential election were b… read more
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Assume that the data has a normal distribution and the
Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Alpha = 0.05 for a two-tailed test … read more
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When performing a rank correlation test, one alternative to
When performing a rank correlation test, one alternative to using the Critical Values of Spearman's Rank Correlation Coefficient table to find critical values is to compute them using this approximati… read more
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For Ryan. Random samples n1=55 & n2=65 were drawn from populations
For Ryan. Random samples n1=55 & n2=65 were drawn from populations 1 & 2 respectively. The samples yielded p^1 =.7 & p^2 = .6 Test Ho:(p1-p2) against Ha:(p1-p2).0 using sigma = .05 1. Perform a hypoth… read more
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Use the given information to find the P-value. Also, use a
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1. Assume that the data has a normal distribution and the
1. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. ALPHA = 0.05 for a left-tailed test. -… read more
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I need help with homework questions. They are multiple choice
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Find the critical z value used to test a null hypothesis?
1. Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. Alpha = 0.09 for a right-tailed test. … read more
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Master's Degree
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Find the critical value x2r based on the given information
Find the critical value x2r based on the given information sample size 5 and confidence level 98%… read more
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#1. Consider the hypothesis test given by H0: µ = 530 H1:
#1. Consider the hypothesis test given by H0: µ = 530 H1: µ ≠ 530 In a random sample of 85 subjects, the sample mean is found to be x = 522.3.Also, the population standard deviation is σ = 29. Determi… read more
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