μ=42.895H0:μ=42.895 H1:μ≠42.895H1:μ≠42.895 Your sample consists of 22 subjects, with a mean of 42.4 and standard deviation of 2.41.
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 mandatory competency test for high school sophomores has a normal distribution with a mean of…
A: Suppose a random variable X, defines the scores in competency test for high school sophomores.
Q: 2. According size in the United States is normally distributed with a mean µ = 2392 square feet and…
A:
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: professor at a local university noted that the exam grades of her studer istributed with a mean of…
A: Given that. X~N( μ , ?) μ=68 , ?=17 Z-score =( x - μ )/?
Q: The heights of women aged 2020 – 2929 in the United States are approximately Normal with mean…
A: Obtain the z‑score for a woman 5.5 feet tall. The z‑score for a woman 5.5 feet tall is obtained…
Q: A recent survey found that 69% of all adults over 50 wear glasses for driving In a random sample of…
A: Obtain the mean of those who wear glasses. The mean of those who wear glasses is obtained below as…
Q: Mean: 37.52 Median: 38.00 Standard deviation: 9.760 Using the values that you generated above,…
A:
Q: O The Economist collects data each year fa Big Mac in various countries around the world. ice of a…
A: Null Hypothesis: H0: There is no sample evidence that the mean price of a Big Mac in Europe is…
Q: z-score Percentile z-score Percentile z-score Percentile -3.0 0.13 -2.0 2.28 -1.0 15.87 -2.9 0.19…
A: It is given that Mean = 24.8 Standard deviation = 2.5 Z-Score, Z = ( X - μ )/σ
Q: Daily Driving The average number of miles a person drives per day is 24. A researcher wishes to see…
A:
Q: The heights of women aged 20– 29 in the United States are approximately Normal with mean 64.2 inches…
A: The data for heights of both women and men are normally distributed. The mean is 64.2 inches and…
Q: distribution of the number of dill pickle spears in a gallon container is approximately normal with…
A:
Q: Alpha LLC recently had its customers rate customer service on a scale of 1 to 10 (with 10 being…
A: Given information: Alpha LLC recently had its customers rate customer service on a scale of 1 to 10.…
Q: Calculate the distance for a Sunday skate that would put it in the shortest 1.5% (bottom 1.5%) or…
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: Composite scores on the American College Testing (ACT) college entrance exam follow the normal…
A: The following information has been given: Let X is a random variable shows the composite scores on…
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: A study has been conducted of the airspeed of various bird species. You would like to specify the…
A:
Q: A recent survey found that 71% of all adults over 50 wear glasses for driving. In a random sample of…
A: It is given that n=20 and p=0.71.
Q: n Professor Krugman's economics course, the correlation between the students' total scores prior to…
A: Solution: Given information: Let x= The pre‑exam totals and y= The final‑exam scores r= 0.5…
Q: In the sample of 100 students, an average of weight was 58.55 kg with standard deviation of 11.60.…
A: The objective of the question is to calculate the standard error of the sample mean. The standard…
Q: The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10…
A:
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: Australia, has an anverage daily rain fall of about 137 mm and the standard deviation is about 69…
A: The average rainfall is 137 mm. The standard deviation of rainfall is 69 mm. The rainfall is…
Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. What is the Z-…
A:
Q: In 2018, the average time spent on campus for undergraduate students (during weekdays) was estimated…
A: Z-test is defined as any statistical test for which the distribution of the test is statistical…
Q: A recent survey found that 61% of all adults over 50 wear glasses for driving. In a random sample of…
A: We have given that Probability of success p=61%=0.61 q=1-p=0.39 n=50
Q: ents are made of the length of a piece of metal with a Vernier caliper. 11 values are 8.95 0.05 mm,…
A:
Q: Calculate the z-score for the largest value and interpret it in terms of standard deviations. Do the…
A: It is given that mean is 28.766, standard deviation is 3.369, the largest value is 35.100 andthe…
Q: We have collected data on the total number of minutes people spent in the local emergency room. The…
A: From the provided information, Mean (µ) = 166.9 min Standard deviation (σ) = 55.4 min Let X be a…
Q: The amount of trash generated by US households (in lbs per day) is normally distributed. You take a…
A: Sample mean = x̅ = 10.91 Sample size = n = 10 Sample S.D = s = 4.736 Standard Error = s/√n =…
H0:μ=42.895H0:μ=42.895
H1:μ≠42.895H1:μ≠42.895
Your sample consists of 22 subjects, with a mean of 42.4 and standard deviation of 2.41.
Calculate the test statistic, rounded to 2 decimal places.
Step by step
Solved in 2 steps with 1 images
- Home prices in a city have mean = $194,000 and standard deviation = $20,000. For n = 25 randomly selected homes, the mean price is x = $198,000. Find the value of the standardized statistic (z- score) for this sample mean. z = USE SALTiger 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) ▼ OThe distribution of heights in a population of women is approximately normal. Sixteen percent of the women have heights less than 62 inches. About 97.5% of the women have heights less than 71 inches. Use the empirical rule to estimate the mean and standard deviation of the heights in this population. Mean: K inches Standard Deviation: inchesYou have have sampled five production lines operating and you wish to estimate the sample standard deviation of the five lines. Given the data below, provide your estimate of the sample standard deviation to the first decimal point, that is, 0.9 instead of 1. Month Production Line 1 51 Line 2 145 Line 3 70 Line 4 119 Line 5 92This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.Assuming a population mean of 900 and a population standard deviation of 200 for LCSW scores. What percentage of individuals have LCSW scores greater than 1100? Plot answer on a normal distribution curve.Consider a set of data in which the sample mean is 30.230.2 and the sample standard deviation is 7.87.8. Calculate the z-score given that x=31.4x=31.4. Round your answer to two decimal places.Due in Testing: Ho: u = 40.26 H1: u # 40.26 Your sample consists of 29 subjects, with a mean of 42.1 and a sample standard deviation (s) of 4.48. Calculate the test statistic, rounded to 2 decimal płaces.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) OA researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.SEE MORE QUESTIONSRecommended 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