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. 8.2 Test for a significant difference between the variances of the two groups. Find the P value. Do not use excell. Solve the step by step

Q: The relationship between use of hormone replacement therapy (HRT) during peri-and post menopause…

A: GivenThe number of breast cancer cases =400The number of non breast cancer cases =800The number of…

Q: It is known that the average weight of the products produced in a factory is 150 grams. The shape of…

A:

Q: A researcher developed a standardized test to measure anxiety so that the scores distribute normally…

A: Here we need to find the required proportion.

Q: The test that is used for comparing two or more populations when the response variable is…

A: We have given that the statement about to the Chi-Square test. Here, need to find out the correct…

Q: The length of time of full-length movies is approximately normally distributed with a mean of 1.9…

A:

Q: How can you identify different steps of testing of hypothesis for population variance

A: Following are steps of testing of hypothesis for population Variance : Step-i : Verify the…

Q: Estimate can be used to identify two general features for each of the several variance estimates in…

A: Here's the explanation is as follows; Analysis of variance (ANOVA) is a method for testing…

Q: When is it useful to use ANOVA?

A: let us first understand what is ANOVA  ANOVA  is the statistical model in which we analyze the…

Q: Overproduction of uric acid in the body can be an indication of cell breakdown. This may be an…

A:

Q: A student received 40 points out of 50 in midterm 1. The mean score of the class in midterm 1 was 30…

A: The student's score went down from midterm 1 to midterm 2. Explanation:Approach to solving the…

Q: A certain type of thread is manufactured weh a mean tensle strength of 75.3 klograms and a standard…

A: We have given that a certain type of thread is manufactured with a mean tensile strength of 75.3 kg…

Q: A large value for chi-square tends to indicate a good fit between the sample data and the null…

A: We know that if the chi-square value is large than the critical value then it will not fit the…

Q: A regulation lacrosse ball should weigh 154 grams. A company produces lacrosse balls for the PLL.…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: An experiment was conducted to a sample of nine gold fish and ten clown fish to determine if there…

A: In case of single population parameter comparison with a specific value, known population standard…

Q: Researchers conducted a study to investigate whether there is a difference in mean PEAK EXPIRATORY…

A: Solution:From the given information, asthma kids sample size is 100, sample mean is 290 and standard…

Q: The melting points of two alloys used in formulating solder were investigated by melting 21 samples…

A: The objective of this question is to determine whether the variances of the melting points of two…

Q: The data in personalities is bivariate normally distributed What is the correlation coefficient for…

A: Follow the steps below to get the correlation coefficient in excel: 1) Import the data in the excel…

Q: A professor has a sample of 30 student scores with a mean of 10, a variance of 9, and a standard…

A: Given, A professor has a sample of 30 student scores with a mean of 10, a variance of 9, and a…

Q: A recent research study reported that the mean daily internet usage among preparatory school…

A: From the provided information, Sample size (n) = 22 Sample mean (x̄) = 125 Sample standard deviation…

Q: 32 students from Batangas National High school shows a mean 1Q of 111 while 30 students from…

A: We want to test the hypothesis

Q: (20 point) Vital capacity values were recorded for a sample of 10 patients with chronic respiratory…

A: Given Information: The sample size, n=10 The sample variance, s2=0.75 The significance level, α=0.05

Q: The amount of money spent on online foods by customers at an online restaurant follows a normal…

A:

Q: Explain how reducing variation as measured by standard deviation (sigma), decreases defects by…

A: Three sigma concept considers the variation about the nominal value to be three times the standard…

Q: When calculating an ANOVA, if the research hypothesis is in fact true, then. variance due to group…

A:

Q: An investor wants to know if the average value of property is different from PKR 85000/=. He made…

A: Given data: Claim: An investor wants to know if the average value of property is different from PKR…

Q: A research team conducted a study of VARIABILITY in students' test performance. Researchers assume…

A:

Q: State the null and alternative hypotheses for the above scenario.

A: Here the variance is supposed to be known.The main objective is to test whether the valve performs…

Q: The mean ±1 sd of ln [calcium intake (mg)] among 25 females, 12 to 14 years of age, below the…

A: (8.2) Since you have posted a question with multiple sub-parts, we will solve first three sub-parts…

Q: Several studies have shown a link between iron depletion without anemia (IDNA) and physical…

A: (a) Consider X be a normally distributed random variable which indicates duration of the rowers with…

Q: Find the value of the test statistic. (Use ₁-₂. Round your answer to two decimal places.) 0.88 Find…

A: Given is the data on the driving distances for the two balls, 40 balls of both the new and current…

Q: An ANOVA is used to evaluate the mean differences among three treatment conditions with a sample of…

A: It is given that the number of treatments, K is 3.Total number of observations is (12 x 3) = 36.

Q: Unfortunately, arsenic occurs naturally in some ground water. A mean arsenic level of u = 8 parts…

A: given, population mean ( μ ) = 8 ppb

Q: It appears that people who are mildly obese are less active than leaner people. One study looked at…

A: (a) Obtain the probability that the mean number of minutes of daily activity of the 5 mildly obese…

Q: What method is used for interpreting the standard deviation that applies to data that have a bell…

A: Bell shaped distribution- It is also known as the normal distribution. The term "bell curve" invents…

Q: An engineer has designed a valve that will regulate water pressure on an automobile engine. The…

A: given data  n = 130 x¯ = 5.1σ2 = 0.25α = 0.05claim : μ > 5we have to state null and alternative…

Q: What is the relationship between the F-ratio for a repeated-measures ANOVA and the F-ratio for an…

A: The relationship between the F-ratio for a repeated-measures ANOVA and the F-ratio for an…

Q: The relationship between a firm's quarterly investment (x) and its quarterly turnover (y) is known…

A: Solution: Given information: n= 48 observation.  y= 5028sy=1200x= 240 sx2= 360000r2= 0.49

Q: how do yuo calcaulate a percentile with a z score of -1.61538

A: The pth percentile of a set of observations is the value below which, p% or (p/100) proportion of…

Q: The average American consumes 86 liters of alcohol per year. Does the average college student…

A: 1.   Consider that μ defines the population mean consumption of alcohols.

Q: The mean alkalinity level of water specimens collected from the Han River in Seoul, Korea, is 50…

A: According to the given information in this question There are more than three subparts according to…

Q: True or false: in ANOVA, if The variability Within samples is Large relative to the variability…

A: In one-way ANOVA, the F-statistic is the ratio: F = variation between sample means / variation…

Q: Total cholesterol in children aged 10-15 years is assumed to follow a normal distrubution with a…

A: Given, Mean = 191 Standard deviation= 22.4 We've to find P(180<X<190)