9. Thirty percent of the students at a high school participate in sports. A sample of students is to be sclected in order to survey them about their time spent on extracurricular activities. Which of the following sample sizes is the smallest that satisfics the large count condition to approximate the sampling distribution of P with a normal distribution? a. 25 b. 35 c. 45 d. 55

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: a. Consider that µd is the true mean difference of ages of best actress and actors. That, is µd =…

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A: Here, mean is 44 and standard deviation is 8. Sample number is 49. We will use sampling…

Q: Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in…

A: The population proportion is 0.12. That is, p=0.12.

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Q: lat fal betwéen and include t a. 50 to 75 b. 60 to 200 c. 70 to 280 d. 140 to 400 a. What is an…

A: Given: Sample size = N = 380 a).Maximum value = 75 Minimum value = 50 We use the following formula…

Q: C. Find the sample size from each of the given data. 7.95% level of confidence, E = 10, o = 24 8.…

A: C. 7.  Here it is given that 95% confidence , margin of error E=10 and standard deviation σ=24…

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A: Mean of the sampling distribution is p.

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Q: 15. Use the following dataset to answer the questions below. Emily has recorded her weight on the…

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Q: 1.Which data set has the greatest sample standard deviation?   a.{30,40,50} b.{120,121,122}…

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Q: If we collect a large sample of blood platelet counts and if our sample includes a single outlier,…

A: If we collect a large sample of blood platelet counts and if our sample includes a single…

Q: 2. What is the sample variance of the nutritional status for the 7 individuals? O 7.63 O 7.068 58.17…

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Q: 4. A numerical measure from a population, such as a population mean, is called a.…

A: Ans-  A numerical measure from a population,            such as a population mean, is called

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A: As the sample size in increasing , spread is decreasing

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Q: Find the sample variance s for the following sample data. Round your answer to the nearest…

A: Solution : The given data is 15, 20, 22, 25, 33

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Q: Lightning Deaths Refer to the sample data in Cumulative Review Exercise 1. a. What is the level of…

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A: The given population for ages are: 62, 46, 68, 64, 57.The objective is to identify the reason for…

Q: For the data set given, what is the standard error of the sampling distribution of mean difference…

A: Consider, Subject 1st 2nd Difference 1 10 11 -1 2 4 6 -2 3 7 9 -2 4 6 5 1…