Calculus and Above

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Find the P-value for the indicated hypothesis test. In a
Find the P-value for the indicated hypothesis test.In a sample of 47 adults selected randomly from one town, it is found that 9 of them have been exposed to a particular strain of the flu. Find the P-… read more
Kofi
PhD in Statistics
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I need assistance understanding and completing this question
i need assistance understanding and completing this question 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… read more
GLENN GILONGOS
Master of Mathematics
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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
GLENN GILONGOS
Master of Mathematics
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ARE THERE CHARGES IN VOLVED, According to a​ research,
According to a​ research, 52.052.0​% of households nationwide used natural gas for heating during a year.​ Recently, a survey of 2 comma 3002,300 randomly selected households showed that 53.053.0​% used natural gas. Use a 0.05 significance level to test the claim that the 52.052.0​% national rate has changed. Formulate the null and alternative hypotheses. Choose the correct answer below. A. Upper H 0H0​: pnot equals≠0.520.52​, Upper H Subscript aHa​: pequals=0.520.52 B. Upper H 0H0​: pgreater than>0.520.52​, Upper H Subscript aHa​: pless than<0.520.52 C. Upper H 0H0​: pequals=0.520.52​, Upper H Subscript aHa​: pgreater than>0.520.52 D. Upper H 0H0​: pequals=0.520.52​, Upper H Subscript aHa​: pnot equals≠0.520.52 Find the test statistic. zequals= nothing ​(Round to one decimal place as​ needed.) Find the​ P-value for the found test statistic. ​P-valueequals= nothing ​(Round to four decimal places as​ needed.) Now make a conclusion. Choose the correct answer below. A. There is not enough information to make a conclusion. B. There is not sufficient evidence to support the claim that the percentage of households using natural gas has changed. C. There is sufficient evidence to support the claim that the percentage of households using natural gas has changed … read more
GLENN GILONGOS
Master of Mathematics
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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. a = 0.05 for a two-tailed test. ±2.575 … read more
Ryan
Bachelor's Degree
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Assume that the data has a normal distribution and the number
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. = 0.05 for a two-tailed test. ±2.575 1.76… read more
Ryan
Bachelor's Degree
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1. Determine the two chi-squared (χ2) critical values for the
1. Determine the two chi-squared (χ2) critical values for the following confidence levels and sample sizes. a. 95% and n=36 b. 99% and n=18 2. We are also interested in estimating the population stand… read more
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Teacher
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FOR MR. WHITE b. Interpret the interval in terms of this application.
FOR MR. WHITE b. Interpret the interval in terms of this application. Choose the correct answer below: A. The water department can be 90% confident that the mean lead level of drinking water for all r… read more
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1. A random sample of 92 observers produced a mean X = 25.8
1. A random sample of 92 observers produced a mean X = 25.8 and a standard deviation s = 2.6. a) Find a 95% confidence interval for 11. b) Find the 90% confidence interval for Jl c) Find the 99% confi… read more
Ryan
Bachelor's Degree
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Use the given information to find the P-value. Also, use a
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis)… read more
Ryan
Bachelor's Degree
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MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points)
MULTIPLE CHOICE. MUST SHOW WORK FOR ENTIRE QUIZ. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adu… read more
Ryan
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1.Of 84 adults selected randomly from one town, 62 have health
1.Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% confidence interval for the true proportion of all adults in the town who have health insurance. A. 0.626… read more
Ryan
Bachelor's Degree
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MULTIPLE CHOICE. Choose the one alternative that best completes
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1. (5 points) Of 84 adults selected randomly from one town, 62 have health insurance. Find a 90% … read more
Ryan
Bachelor's Degree
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1. The lengths of human pregnancies are normally distributed
1. The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy lasts at least 300 days? (Points : 6)… read more
Ryan
Bachelor's Degree
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I Calculated The Sample Mean For 12 Randomly Selected High
I calculated the sample mean for 12 randomly selected high school seniors' test scores. The mean was 908.3 and the sample standard deviation was 305.4. Can you construct a 99% confidence interval for … read more
Stevewh
Teacher
Bachelor's Degree
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Find the value of the test statistic z using z = W4Q3 The
Find the value of the test statistic z using z = W4Q3 The claim is that the proportion of drowning deaths of children attributable to beaches is more than 0.25, and the sample statistics include n = 6… read more
Ryan
Bachelor's Degree
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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
Sandhya_sharma
Master's Degree
Master's Degree
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2)Which of the following hypothesis tests use a z test statistic? A)
2)Which of the following hypothesis tests use a z test statistic? A) Matched Pairs B) Single Proportion C) Two Proportions D) Goodness-of-Fit E) Single Mean: σ Known F) Independence G) Two Variances H… read more
Ryan
Bachelor's Degree
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