A random sample of n = 16 communities in eastern New Mexico gave the following information for people under 25 years of age. x, is the rate of hay fever per 1000 population for people under 25. x1 = 109.5 and s1 eastern New Mexico gave the following information for people over 50 years old, x2 = 99.36 and s2 = 15.41. A random sample of n2 = 14 communities in %3D = 11.57. Assume that the hay fever rate in each age group has an approximately normal distribution. Do the data indicate that the age group over 50 has a lower hay fever rate? Use alpha = 0.05

Q: 5. A sample of n 36 from a population of u = 50 and o = 18 has a mean M = 47 the z-score for the…

A:

Q: Suppose that a random sample of size 20 is taken from a normal distribution with unknown mean and…

A: The prior Standard deviation is obtained below:

Q: 4. ACT composite scores are normally distributed with a p= 21. A sample of 25 students is randomly…

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Q: What is STANDARDIZED EFFECT estimates Cohen’s d?

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A: r=correlation=0.97 (2 decimal places)

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Q: Samples of size n = 9 are selected from a normal population with µ = 80 with σ = 18. What is the…

A: Given information n = 9 µ = 80 σ = 18

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A: Given data ,Sample 1                              Sample 2Mean (x1)=87…

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Q: The variance of one sample (22 regions) = 14.29. (a=0.01) (10')

A: Given, The hypothesis to be tested is given as follows: This is a two-tailed test.

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Q: The director of research and development is testing a new medicine. She wants to know if there is…

A: From the provided information, The hypotheses can be constructed as:Null hypothesis: H0: µ = 309…

Q: Bob’s z-score for the last exam was 1.52 in Prof. Axolotl’s class BIO 417, "Life Cycle of the…

A: The Bob’s z-score for the last exam was 1.52.

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A: # Given random sample of size n=150 and population mean mu=24.98  and standard deviations=4.18  To…

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A: GivenMean(μ)=44x=40z=-0.50

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Q: Given that age of ECU students is normally distributed. A random sample of 16 students had an…

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Q: A population of scores has u = 46. In this population, a score of X = 39 corresponds to z = -1.40.…

A: Given that, population mean mu=46, X=39 Z=-1.40,  We have to find population standard deviation…

Q: What proportion of the data has values between 330 and 345?

A: It is given that  Mean, μ = 345 Standard deviation, σ = 30 Z-Score, z = ( X - μ )/σ

Q: distribution with a mean of μ =41 and a standard deviation of σ = 4 is transformed into a…

A: According to guidelines we solve first three subparts when given multiple subparts.Please post the…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.