Testing: Ho: µ = 25.9 H1:µ < 25.9 Your sample consists of 38 subjects, with a mean of 24.1 and standard deviation of 4.3. Calculate the test statistic, rounded to 2 decimal places. t =
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A: Given Data: x¯=22.1s=1.06n=48μ=22.37
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Q: Testing: Ho:u = 22.37 H1:u # 22.37 %3D Your sample consists of 48 subjects, with a mean of 22.1 and…
A: Provided information: Mean = 22.1 Standard deviation = 1.06 Sample size = 48 H0: μ=22.37H1: μ≠22.37
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Q: SS1=100 df1=4 SS2=196 df2=4 What is the pooled standard deviation?
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Q: Ho:µ = 16.435 H1:µ + 16.435 Your sample consists of 31 subjects, with a mean of 15.5. You were given…
A: given sample size n= 31 , sample mean = 15.5 , standard deviation = 2.73
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- Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 75.6 inches tall. (to 2 decimal places) Submit QuestionConsider a value to be significantly low if its z score less than or equal to - 2 or consider a value to be significantly high if its z score is greater than or equal to 2. Atest is used to assess readiness for college. In a recent year, the mean test score was 21.3 and the standard deviation was 4.7. Identify the test scores that are significantly low or significantly high. What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Test scores that are greater than (Round to one decimal place as needed.) O B. Test scores that are between and (Round to one decimal place as needed. Use ascending order.) OC Test scores that are less than (Round to one decimal place as needed.)Please tapy answer The director of admission at a large university advises parents of incoming students about the cost of textbooks during a typical semester. He selected a sample of 100 students and recorded their textbook expenses for the semester. He then computed a sample mean cost of 3,154 pesos with a standard deviation of 430 pesos. Is there an evidence that the population mean is above 3,000 pesos?
- I Professor Brown administered an achievement test, which as he remembers from years of experience, yielded a population mean score of 85. If his class of 25 students obtained a mean score of 89 with standard deviation score of 14, can the professor claim that his class is a superior class? Assume that the mean score is approximately normally distributed. Use a = 0.01Q2: Serum amylase determinations were made on a sample of 15 apparently healthy subjects in the Electricity Power Plant of Nasriya January 2010. The sample yielded a mean of 96 and a standard deviation of 35 units/100ml. Estimate the true mean of serum amylase in the healthy population of Nasriya.Hi Please help. Thank you. Total cholesterol in children aged 10 to 15 years of age is assume to follow a normal distribution with a mean of 191 and a standard deviation of 22.4. What is the 90 percentile of total cholesterol?
- * Question Completion Status: OC. 0.0099 d. 0.0918 QUESTION 3 EPA fuel economy estimates for automobile models tested recently predicts a mean of 24 mpg and a standard deviation of 6 mpg. Assume that a Normal model applies, N(24, 6 ). What mpg for the automobiles would be the cutoff value for the lowest 10% of the mpg's (the 10th percentile of gas mileage)? O a. 12.80 mpg O b. 10.00 mpg O c. 31.38 mpg O d. 16.32 mpg QUESTION 4H0: μ ≤ 16.09 vs. HA: μ > 16.09What is the test statistic for sample of size 25, mean 13.97,and standard deviation 1.48?Cereals sodium values have a mean of 167 and a standard deviation of 77.3. Find the z-score for the cereal that has a sodium value of 0. How would you interpret this z-score?
- Considering you want to be 99% confident about estimating the mean yield strength for A36 grade steel, what sample size should you use if you want the error to be within 0.50 ksi? Assume that the population standard deviation is 10 ksi.Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the height of a man with a z-score of 3.2 (to 2 decimal places) Question Help: Submit Question Videoz Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?