Round to three decimal places as needed.) Part 4 The confidence interval estimate of sigma is response here mgless thansigmaless than enter your enter your response here mg. (Round to two decimal places as needed.)
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- The heights, in inches, of orangutans are normally distributed with a population standard deviation of 3 inches and an unknown population mean. If a random sample of 17 orangutans is taken and results in a sample mean of 57 inches, find the error bound (EBM) of the confidence interval with a 95% confidence level. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576Find the critical value t α 2corresponding to a 99% confidence level, given that the sample has size . N=21The ball corporations beverage can manufacturing plant in fort Atkinson, Wisconsin, uses mental supplier that provides mental with a known thickness standard deviation o=.000610 mm. Assume a random sample of 55 sheets of metal resulted in an x=.2839 mm the 90% confidence interval is from To ?
- The germination periods, in days, for grass seed are normally distributed with a population standard deviation of 7 days and an unknown population mean. If a random sample of 17 types of grass seed is taken and results in a sample mean of 37 days, find the error bound (EBM) of the confidence interval with a 98% confidence level. z0.10 z0.05 z0.025 z0.01 z0.005 1.282 1.645 1.960 2.326 2.576On the Navajo Reservation, a random sample of 210 permanent dwellings in the Fort Defiance region showed that 63 were traditional Navajo hogans. In the Indian Wells region, a random sample of 152 permanent dwellings showed that 22 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 99% confidence interval for p1 – p2. (Round your answers to three decimal places.) lower limit upper limit (b) Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? all negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for p1 – p2 in this context. Because the interval contains only positive numbers, we can say that there is a higher proportion of hogans in the Fort…Provided below are summary statistics for independent simple random samples from two populations. Use the nonpooled t-test and the nonpooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval. x1=8, s1=5, n1=20, x2=14, s2=2, n2=20 find the 95% confidence interval
- The U.S. Department of the Interior is checking cattle on the Windgate open range in Montana. Arandom sample of 900 shows that 54 are undernourished. a) Let p represent the proportion of undernourished cattle on Windgate range. Find a point estimatefor p.b) Find a 99% confidence interval for p.A medical researcher measured the pulse rates (beats per minute) of a sample of randomly selected adults and found the following Student's t-based confidence interval: With 95.00% Confidence, 71.457985<μ(Pulse)<74.712393 a) What's the margin of error for this interval? b) If the researcher had calculated a 90% confidence interval, would the margin of error be larger or smaller?Use the given information to find the number of degrees of freedom, the critical values χ2Land χ2R,and the confidence interval estimate of σ.It is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. Platelet Counts of Women 99% confidence; n=29, s=65.7. df= (Type a whole number.) χ2L= (Round to three decimal places as needed.) χ2R= (Round to three decimal places as needed.) The confidence interval estimate of σ is __<σ<__. (Round to one decimal place as needed.)
- On the Navajo Reservation, a random sample of 230 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 139 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 95% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit upper limitOn the Navajo Reservation, a random sample of 230 permanent dwellings in the Fort Defiance region showed that 68 were traditional Navajo hogans. In the Indian Wells region, a random sample of 139 permanent dwellings showed that 21 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 95% confidence interval for p1 − p2. (Round your answer to three decimal places.) lower limit upper limit (b) Examine the confidence interval and comment on its meaning. Does it include numbers that are all positive? all negative? mixed? What if it is hypothesized that Navajo who follow the traditional culture of their people tend to occupy hogans? Comment on the confidence interval for p1 − p2 in this context. Because the interval contains both positive and negative numbers, we can not say that there is a higher proportion…On the Navajo Reservation, a random sample of 216 permanent dwellings in the Fort Defiance region showed that 60 were traditional Navajo hogans. In the Indian Wells region, a random sample of 137 permanent dwellings showed that 22 were traditional hogans. Let p1 be the population proportion of all traditional hogans in the Fort Defiance region, and let p2 be the population proportion of all traditional hogans in the Indian Wells region. (a) Find a 90% confidence interval for p1 − p2. (Round your answer to three decimal places.)