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: Define statistics

A: .Statistics : It is a branch of applied mathematics and may be regarded as mathematics applied to…

Q: How many students were greater than or equal to 170 cm tall? Frequency a part of Survey(Male…

A: Given: n(): frequency of class

Q: UESTION 10 Use the data to find the value that corresponds to the 30th percentile. {23 ,27, 13, 35,…

A: The 30th percentile of the dataset

Q: IQ scores are measured with a test designed so that the mean is 113 and the standard deviation is…

A:

Q: The sum of all the relative frequencies of a distribution is ________

A: Relative frequency: The relative frequency is obtained as:  relative frequency = class…

Q: Pulse rate (per minute) of 25 persons were recorded as 61, 75, 71, 72, 70, 65, 77, 72, 67, 80, 77,…

A: Frequency distribution: The number of values lying in the particular interval or the number of times…

Q: The percentage of values that lies within population mean plus or minus 3.3 standard deviations of…

A:

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

A: From the given information, SAT exam math scores are normally distributed with mean 523 and standard…

Q: Suppose that five people, including you and a friend, line up at random. Let X be the number of…

A: Let X be the number of people standing between you and your friend. Thus X takes value from 0 to 3.

Q: find out population standard deviation with clear all steps 65,69,86,36,45,25,31,74,32.1

A: ANSWER:- x x2 65 4225 69 4761 86 7396 36 1296 45 2025 25 625 31 961 74 5476…

Q: 3: If µ(x) for 0<x<100 find the mean, mode and median of the age 100-x 400-x at death of a newborn.

A: The given density function is: μx=2100-x-8400-x

Q: mean price in each city.

A: The GIven data is The Department of trade and industry survey of the Price of unleaded gasoline at…

Q: A certain tennis player makes a successful serve 80% of the time. Suppose the tennis player serves…

A: Given : A certain tennis player makes a successful serve 80% of the time. assume that tennis player…

Q: On an examination given to 8600 students, Hay’s score of 405 was higher than the scores of 3952 of…

A: total students = 8600 hays score was higher than 3952 of the total students

Q: A simple random sample of 100 observations was taken from a large population. The sample mean and…

A: Given that ,                    sample size n=100                    Mean u=80…

Q: How do I find the mean for each of the samples listed

A: Provided data is:   Sample 1 Sample 2 Sample 3 Sample 4   # X # X…

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

A:

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

A:

Q: The intelligence quotient (IQ) score is normally distributed in a certain population of children.…

A:

Q: 0, 0, 2, 1, 0, 1, 0, 4, 0, 1   what is the standard deviation of this data

A:

Q: Based on true statistics, list the incomes for a country from tourism for any 10 continuous years.…

A: b) Arrange the data in an ascending order. Then,Median=N+12th observation=11+12th observation=122th…

Q: Suppose that the resting heart rate of five of your classmates was taken: 66, 67, 70, 71, and 69…

A: The heart rate of five of your classmates was taken: 66, 67, 70, 71, and 69 beats per minute. 1)…

Q: 2,5,7,9,10,12,13,15,17,18,22,26   find the standard deviation and the mean of these numbers above

A:

Q: 6,6,6,6,8,10 - Find the standard deviation

A:

Q: What are the measures of variation and what is the Imperial rule

A: Different measure of variation 1. Range It takes the difference between the maximum of the data and…

Q: Determine and explain why the following is discrete or continuous variable 1. income of a teacher…

A: A variable can be discrete or continous. Discrete variable are countably finite and it will be…

Q: Calculate the Percentile Rank for a student who becomes fourth (4th) in terms of the GPA categorized…

A: The formula for percentile rank of score is, Percentile rank of score=Number of values below…

Q: During the days of coronavirus, people work most of the time from home. Many offices, schools,…

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case…

Q: student scored in the 75th percentile on the SAT. What does that mean?

A:

Q: . Based on true statistics, list the incomes for a country from tourism for any 10 continuous years.…

A: a) Assuming that this question is already completed as first country is ARMENIA. b) median n=10  as…

Q: What is the mean absolute deviation of 1, 5, 8, & 10? Show your solution

A:

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: Given data A researcher studying stress is interested in blood pressure measurements He has a good…

Q: set of 900 exam scores is normally distributed with a mean = 82 and standard deviation = 5. How…

A: It is given that the exam scores follow a normal distribution with mean 82 and standard deviation 5.…

Q: How would I graph this

A: The following table gives the data set with the required calculations:

Q: A manufacturing process requires certain ceramic materials to be baked in an oven. The process…

A: The middle value of the data set is median. From the output, the median is 530.

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A:

Q: doctor in the oncology department of a hospital surveyed the breathing rateof cancer patients. The…

A: The empirical rule should be used in this problem.

Q: A group of 20 students obtained a mean score of 70 on an examination. The second group of 30…

A: From the question, the required information is given below:

Q: A college management wanted to give scholarships to B. Com. students securing 60 per Těnt and above…

A:

Q: Water specimens are taken from water used for cooling as it is being discharged from a power plant…

A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

Q: what percent of the class lies above 1.4 standard deviations from the mean? 68, 78, 79, 80, 85, 85,…

A: Solution :  Mean = 93.25 Standard deviation = 13.09 Here we have to find percent of the class lies…

Q: The relative frequency associated with a particular class in the population is the fraction of…

A: Relative frequency is the ratio of the frequency of a particular event to the total frequency.

Q: of systolic blood pressure is 6.4 the mean blood pressure for white O (122.048, 125.832) O (121.893,…

A: Given : Sample Size, n = 41 Sample Mean, x̄ = 123.84 sample standard…

Q: Mean= 100 and standard deviation=10, what is probability of x110

A:

Q: A set of exam marks has mean 75, median 65, and standard deviation 15 marks. It is decided to…

A:

Q: tion 9,6. Out of the total population of certain town in South Africa, 60% belonged to the Black…

A:

Q: Paul wants to estimate the mean number of siblings for each student in his school. He records the…

A: A parameter is a number representing the entire population. Usually sample statistics is used to…

Q: A researcher studying stress is interested in the blood pressure measurements of chief executive…

A: Here, The researcher is testing whether mean is more than 134.

Q: Use the following list of resting pulse rates of 55 people. The mean of these rates is 70.5, and the…

A: Given information: μ=70.5, σ=8.9, n=55