Testing: H0:μ=23.665H0 H1:μ>23.665H1 Your sample consists of 48 subjects, with a mean of 24.2 and standard deviation of 3.87. Calculate the test statistic, rounded to 2 decimal places. t=
Q: Test the claim that the mean age of the population in Sin City is less than 26 years. Sample data…
A: Solution: Let X be the age. From the given information, x-bar = 24.4 years, S=9.2 years and n=25.
Q: Calculate the z-score. The amount of advertising per hour of broadcast time has an average of 17…
A: From the provided information, Mean (µ) = 17 minutes Standard deviation (σ) = 2.7 minutes X~N (17,…
Q: Find the 30th percentile of the blood pressures. Find the 67th percentile of the blood pressures.…
A: Consider a random variable X which represents the diastolic blood pressures of adult women in the…
Q: A survey of 15 large cities noted the average weekly commute times, in hours, of the residents of…
A: Given the data is 4.5,5.0,4.6,5.0,2.6,3.4,4.8,4.9,2.5,6.4,3.7,3.9,3.7,4.7,5.4.We have to find the…
Q: The mean body mass index (BMI) for boys age 12 is 23.6 kg/m2. An investigator wants to test if the…
A: Given detect a difference in BMI of 2 kg/m2 standard deviation in BMI is 5.7 kg/m2. Asume that…
Q: A factory that manufactures bolts is performing a quality control experiment. Each object should…
A: Provided information is ; sample size(n) =69 bolts sample mean(x¯) = 18.04 Population standard…
Q: 2. According size in the United States is normally distributed with a mean µ = 2392 square feet and…
A:
Q: assuming that adults have IQ scores that are normally distributed with a mean of 102.4 and a…
A: Introduction: Denote X as the IQ score of a randomly selected adult. It is given that X has a normal…
Q: determine the percentile ranks (from their respective z-scores) using the normal curve for Teachers…
A: We want to find z value for given data
Q: Many people believe that the average number of Facebook friends is 140. The population standard…
A: Population mean : μ=140 Population standard deviation : σ=39.3 Sample size : n=43 Sample mean :…
Q: The mean IQ for the U.S. is 100 with a standard deviation of 15. A Troy statistics professor thinks…
A: Given data is95,100,105,110,115,100,105,110,105,105sample size(n)=10significance level(α)=0.05
Q: Is there a doctor in the house? A market research firm reported the mean annual earnings of all…
A: GivenMean(x)=192890sample size(n)=47standard deviation(s)=43117α=0.01
Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…
A:
Q: distribution of the number of dill pickle spears in a gallon container is approximately normal with…
A:
Q: SS1=100 df1=4 SS2=196 df2=4 What is the pooled standard deviation?
A: Given SS1=100 df1=4 SS2=196 df2=4
Q: Find a raw score. What is the raw score? (
A: Here given, The mean for a data set is 66. The standard deviation is 2 , and the z score is 0.55.
Q: The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1200…
A: Solution-: Given: μ=1200,σ=100 We want to find P(light bulbs last between 1100 hours and 1300…
Q: The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10…
A:
Q: Mechanical pencil lead is manufactured with a mean width of 0.9 mm. Because of variability in the…
A:
Q: Consider a value to be significantly low if its z score less than or equal to - 2 or consider a…
A: Let μ=5.77599 g is the weight(in grams) of a type of coin.σ=0.05076 g is the standard…
Q: The amount of sugar was measured for a sample of 30 different breakfast cereals. The sample mean…
A: Given: Sample mean (u)=10.4 Sample standard deviation (σ)=5.3 Number of sample (n)=30 We have to…
Q: Mean typing speed is 90 wpm, with a standard deviation of 18 wpm. What typing speed separates the…
A: Let X be the random variable representing the typing speed. It is required to find the value of x…
Q: survey of 15 large cities noted the average weekly commute times, in hours, of the residents of each…
A:
Q: Consider a value to be significantly low if its z score less than or equal to - 2 or consider a…
A: A test score is considered to be significantly low if it is two standard deviations below the mean…
Q: An airline claims at the Average number of years of experience of its pilots is 18.3 years. In a…
A:
Q: Score for the California Peace Officer Standards and Training test are normally distributed, with a…
A: Given X is normal Distributed with mean µ = 69.6 and standard deviation σ = 11.3 now will use…
Q: What percent of athletes complete the course between 8 and 9 minutes?
A:
Q: Pumpkins from a local farmer have a mean weight of 16 pounds with a standard deviation of 2.5…
A: Given information: It is given that, Pumpkins from a local farmer have a mean weight of µ = 16…
Q: Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi…
A: normal distributionμ = 4.4σ = 0.9P(x<3.5) = ?
Testing:
H0:μ=23.665H0
H1:μ>23.665H1
Your sample consists of 48 subjects, with a mean of 24.2 and standard deviation of 3.87.
Calculate the test statistic, rounded to 2 decimal places.
Step by step
Solved in 2 steps with 2 images
- Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the same for the smallest value N: 50 Mean:28.766 SE Mean: 0.476 St.Dev: 3.369 Min: 21.300 Q1: 26.375 Median: 29.400 Q3: 31.150 Max: 35.100Calculate Z-score and Probabilty We have collected data on the total number of minutes people spent in the local emergency room. The times follow a normal model with a mean of 166.9 min and a standard deviation of 55.4 minutes. Find the following: What percent of ER patients spent between 2.5 and 3.5 hours there?H0:μ=25.735H0:μ=25.735H1:μ≠25.735H1:μ≠25.735Your sample consists of 46 subjects, with a mean of 24 and a standard deviation of 4.73 Calculate the test statistic, rounded to 2 decimal places
- Identify the average price. Identify the mean, median, and mode for cost/mile, road-test score, reliability, and value score. Calculate the standard deviation of each (predicted reliability, price, cost/mile, value score, and road-test score) using Excel. What percentile does the Chevrolet Malibu LTZ (V6) fall in?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 Questioniger 2. Hypothesis: College students sleep less than the recommended 8 hours. Data: Sample mean (X) = 7.25, sample standard deviation (Sx) = 2.1, N = 25.
- Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see if people over age 60 drive less than 24 miles per day. She selects a random sample of 25 drivers over the age of 60 and finds that the mean number of miles driven is 23.4. The population standard deviation is 4.1 miles. At a = 0.01, is there sufficient evidence that those drivers over 60 years old drive less than 24 miles per day on average? Assume that the variable is normally distributed. Use the critical value method with tables. Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. H: u = 24 not claim Η: μ 24 claim The hypothesis test is a one-tailed test. Part: 1/5 Part 2 of 5 Find the critical value(s). Round the answer to at least two decimal places. If there is more than one critical value, separate them with commas. Critical value(s):Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see if people over age 60 drive less than 24 miles per day. She selects a random sample of 25 drivers over the age of 60 and finds that the mean number of miles driven is 22.5. The population standard deviation is 4.1 miles. At a = 0.01, is there sufficient evidence that those drivers over 60 years old drive less than 24 miles per day on average? Assume that the variable is normally distributed. Use the P-value method with a graphing calculator. Part: 0 / 4 Part 1 of 4 (a) State the hypotheses and identify the claim. H,: (Choose one) ▼ OUse sample standard deviation formula to find the standard deviation of these BMI’s: 33.3, 28, 45.4, 28.4 and 25.9.N=80 p=.6 mean? variance? standard deviation?Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see if people over age 60 drive less than 24 miles per day. She selects a random sample of 25 drivers over the age of 60 and finds that the mean number of miles driven is 23.4. The population standard deviation is 4.1 miles. At a = 0.01, is there sufficient evidence that those drivers over 60 years old drive less than 24 miles per day on average? Assume that the variable is normally distributed. Use the critical value method with tables. Part: 0 / 5 Part 1 of 5 State the hypotheses and identify the claim with the correct hypothesis. Ho: (Choose one) Oz 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?Recommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Probability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
Elementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSON
The Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. Freeman
Introduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman