The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. 1- Test for a significant difference between the variances of the two groups

The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the poverty level is 6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake (mg)] among 40 females, 12 to 14 years of age, above the poverty level is 6.80 ± 0.76. 1- Test for a significant difference between the variances of the two groups

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Description: The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ±

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 11MCQ

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The mean ±1 sd of ln [calcium intake (mg)] among 25
females, 12 to 14 years of age, below the poverty level is
6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake
(mg)] among 40 females, 12 to 14 years of age, above the
poverty level is 6.80 ± 0.76.
1- Test for a significant difference between the variances
of the two groups

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The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.2 Test for a significant difference between the variancesof the two groups.8.3 What is the appropriate procedure to test for a significant difference in means between the two groups?8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI forThe mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.6 Compute a 95% CI for the difference in meansbetween the two groups.
The mean ±1 sd of ln [calcium intake (mg)] among 25females, 12 to 14 years of age, below the poverty level is6.56 ± 0.64. Similarly, the mean ± 1 sd of ln [calcium intake(mg)] among 40 females, 12 to 14 years of age, above thepoverty level is 6.80 ± 0.76.8.2 Test for a significant difference between the variancesof the two groups.8.3 What is the appropriate procedure to test for a significantdifference in means between the two groups?8.4 Implement the procedure in Problem 8.3 using thecritical-value method.8.5 What is the p-value corresponding to your answer toProblem 8.4?8.6 Compute a 95% CI for the difference in meansbetween the two groups.
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A population of marine gastropods has shell lengths that are normally distributed with a mean of 7 mm and a variance of 2.25 mm^2. What proportion of the population will have a shell between 5.5 mm and 8.5 mm?
The patient recovery time from a particular surgical procedure is normallu distrubuted with a mean of 5.3 and a standard deviation of 2.1 days. what is the median recovery time? what is the z-score for a patient who takes ten days to recover?
What is the best correlational test to use in SPSS for a research sample size of 39?
32 students from Batangas National High school shows a mean 1Q of 111 while 30 students from Batangas State University Integrated School were found to have a mean IQ of 115. Variance is equal to 64 and 78, respectively. Is there a significant difference between their 1Q'$? Use a 0.025 level of significance.
Several studies have shown a link between iron depletion without anemia (IDNA) and physical performance. In one recent study, the physical performance of 24 female collegiate rowers with IDNA was compared with 24 female collegiate rowers with normal iron status. Several different measures of physical performance were studied, but we'll focus here on training-session duration. Assume that training-session duration of female rowers with IDNA is normally distributed with mean 58 minutes and standard deviation 11 minutes. Training-session duration of female rowers with normal iron status is normally distributed with mean 69 minutes and standard deviation 18 minutes. (a) What is the probability that the mean duration of the 24 rowers with IDNA exceeds 64 minutes? (b) What is the probability that the mean duration of the 24 rowers with normal iron status is less than 64 minutes? (c) What is the probability that the mean duration of the 24 rowers with IDNA is greater than the mean duration of…
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the mean age when people got married for the first time in the year 2000 was 26 years old with a population standard deviation of 6.4 years. A researcher thinks that marriage age has significantly changed since then. A survey of married persons of this generation was done to see if the mean age has changed. The sample of 48 married persons found that their mean age of first marriage was 29.3 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? H0: yearsHa: years Based on the hypotheses, find the following: Test Statistic z = (Give answer to at least 4 decimal places)P-Value= (Give answer to at least 4 decimal places) Based on the above we choose to The correct summary would be: that the current mean age of first marriage is different than 26.
Suppose the total weight of passengers and luggage on an airline flight is normally distributed with mean 8914 and standard deviation 32 What is the 2.28th percentile of total passenger weight