x1:   Rate of hay fever per 1000 population for people under 25 96, 92, 122,126, 94, 123,12, 93, 125, 95, 125, 117, 97, 122,127, 88 x2: Rate of hay fever per 1000 population for people over 50 97, 112,103, 96,114, 88, 110, 79, 15, 100, 89, 114, 85, 96 x1 = s1 = x2 = s2 =  Compute the corresponding z or t-value as appropriate. (Test the difference ?1 − ?2. Do not use rounded values. Round your answer to three decimal places.) What is the value of the sample test statistic? Find a 90% confidence interval for ?1 − ?2. (Round your answers to two decimal places.) lower limit:________ upper limit:_______

Q: “Among those born in 1920, a woman in the lowest income group surviving to 50 could expect to live…

A: Given data of change in life expectancy at age 50 for women according to their income levels. As…

Q: According to the National Institute of Mental Health website, the prevalence (base rate) of…

A: From the given information,  The prevalence rate is 1%. The test for schizophrenia is 90% correct…

Q: Prove the general formula for interval estimation of ratio of population variance.

A: Statement:-  If x1,x2..... xn ~ N(μx, σx2) and y1, y2 .....ym ~ N(μy , σy2) are independent random…

Q: (46, 47, 49, 49, 51, 53, 54, 54, 55, 55, 59 1st 3rd quartile??

A: The data is provided in ascending order as; 46, 47, 49, 49, 51, 53, 54, 54, 55, 55, 59 The first…

Q: What is the mean amount (in ml) of blood in the vias 9.79, 9.81, 9.91, 9.96, 9.98?

A: The objective of this question is to calculate the mean (average) amount of blood in the vials. The…

Q: recently conducted random sample of 1300 people, 952 of them said that they would start eating…

A:

Q: The mean value of the scores in a Statistics exam was 85 with a standard deviation of 4. Find an…

A:

Q: The following are ages of 17 of the signers of the Declaration of Independence. 44, 39, 35, 49, 55,…

A:

Q: The number of consumers purchasing a particular item on a given day is found to be uniform over the…

A: Let X denotes the number of consumers purchasing a particular item on a given day and it follows…

Q: Eight quantities of effluent from a pulp mill were each divided into ten batches. From each…

A: Given:   Quantity number Untreated Treated Difference 1 5 5 0 2 1 5 -4 3 1.8 1.2 0.6 4 1…

Q: Eight quantities of effluent from a pulp mill were each divided into ten batches. From each…

A: Given:   Untreated Treated Difference (d) 5 5 0 1 5 -4 1.8 1.2 0.6 1 4.8 -3.8 3.6 5…

Q: What happens to the proportion of intervals that include the population proportion as the sample…

A: The formula for the confidence interval of population proportion can be written as: Here n is the…

Q: What is similarities between weighted mean value theorem and simpson's rule?

A: The similarities between the  weighted mean value theorem and Simpson's rule as follows:

Q: E confidempe interval for the mean percentage

A: here given, n = sample size = 390 p^ = 0.48% z score for 95 %  confidence level =1.96

Q: Calculate the 5 number summary and the interquartile range of the following data: 37, 35, 34, 58,…

A: Given data is37,35,34,58,30,62,45,12,49,6,32,27,25,18,42sample size(n)=15

Q: The accompanying data table includes the annual prices of 25 commercial leases. All of these leases…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: define discrete statistics

A: Introduction Statistics is a field which involves collection, arrangement and analysis of the data…

Q: What are the Average rates and secant line?

A: Assume we have a function f(x) The Average Rate of Change of function f(x) on the interval [a, b] is…

Q: 12,12,,13,14,15,16,78,89,96,63,3,2 find population mean and population standard deviation

A:

Q: What is the mean amount (in ml) of blood in the donations 453, 456, 462, 475, 483?

A: The given data is as follows:453, 456, 462, 475, 483The objective is to compute the mean value.

Q: What is the area of proportion below a z-score of -.91? What is the area of proportion between the…

A: Z scores are given.

Q: 364 randomly selected light bulbs were tested im a laboratory, 124 lasted more than 500 hours. Find…

A: Consider that p is the true proportion of light bulbs that last more than 500 hours estimate of p is…

Q: Compute general fertility rate and gross reproduction rate from the data given below : Age group of…

A: Given : Proportion of female births = 46.2%

Q: What is the Central Limit Theorem and how does it apply to statistics?

A: The Central Limit Theorem (CLT) is a fundamental concept in statistics that describes the behavior…

Q: what is the value of 1.1538 from the z_table?

A: Explanation: Standard normal Z-table gives the area to the left of  the Z. Z = 1.1538, is the area…

Q: 9. mean = 676; standard deviation = 60 Page

A:

Q: What is the mean length of time that this insect spends on a plant?

A: Suppose that the time in minutes, Y , that an insect spends on a plant is exponentially distributed…

Q: The incubation period for the New Guinea Blue-Striped Lizard is normally distributed with mean 61…

A: Note: Hey, since there are multiple subparts posted, we will answer first three subparts. If you…

Q: What is formula for z RATIO FOR A SINGLE POPULATION MEAN?

A: It is used for testing whether the sample mean value is equal to the hypothesized mean value. If…

Q: What is Guttman scale?

A: Guttman Scale Definition Guttman scale is one of the three unidimensional scales, the other two…

Q: male female Wrist_girth Gender 12.5- 13- 13.5- 14- 14.5- 15.5- 16.5 - 17.5- |-81 18.5- 19- 19.5 - -…

A: A symmetric distribution refers to that type of distribution whose left and right sides of the…

Q: The following are ages of 16 of the signers of the Declaration of Independence. 43, 62, 50, 34, 50,…

A: Given data : 43, 62, 50, 34, 50, 35, 42, 32, 55, 37, 48, 60, 35, 34, 39, 33

Q: What does decriptive statistics invole

A: To find, What does decriptive statistics invole?

Q: Where does the Tukey’s HSD test can be used?

A: