94, and s The test statistic is 10.20408 The smaller critical number is The bigger critical number is What is your conclusion? A. There is not sufficient evidence to warrant the rejection of the claim that the population standard deviation is equal to 14 OB. There is sufficient evidence to warrant the rejection of the claim that the population standard deviation is equ to 14
Q: 12. The mean SAT score in math is 571. The standard deviation of these scorews is 48. a special…
A: The sample size is 100.The sample mean is 583.The population standard deviation is 48.We have to…
Q: Assume the average amount of days a patient spends in hospital is believed to be 14 days and a…
A:
Q: The mean systolic blood pressune of all healthy adults is less than than 121 mm Hg Sample data: For…
A:
Q: that the In order to set rates, an insurance company is trying to est standard deviation is 2.8…
A:
Q: The company is expecting that only 104 of this year's production will fail in less than 3 years and…
A: Given that Let X denotes the life expectancy of computer produced by Ahmadi With mean =6 years and…
Q: A manager is interested in determining if the population standard deviation has dropped below 88.…
A: Given that Sample size n = 23 Sample SD s = 71 Level of significance = 0.10
Q: 1. Collected data shows that about 220,o00 high schoolers took the AP in 2020. The FRQ section of…
A: Given data is appropriate for testing of hypothesis .for z-test for single mean for large sample…
Q: The number of ants per acre in the forest is normally distributed with mean 44,000 and standard…
A: Given X is normal Distributed with mean µ = 44000.0 and standard deviation σ = 12355.0 now will…
Q: Out of 100 packages 150. Use your knowledge of normal distribution to estimate the average number of…
A: Given 68 out of 100 is 68% Vide the Empirical rule, also known as 68 - 95 - 99.7 percent rule stated…
Q: A sporting goods store believes the average age of its customers is 37 or less. A random sample of…
A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: The mean and standard deviation for each part are given below. VERBAL QUANTITATIVE LOGICAL…
A:
Q: The number of chocolate chips in a popular brand of cookie is normally distributed with a mean of 22…
A:
Q: The Z-score for 1420 is (Round to two decimal places as needed.) Which values, if any, are unusual?…
A: It is given thatMean, μ = 1511Standard deviation, σ = 312Z-Score, Z = ( X - μ )/σwhere, Z be the…
Q: Assume the results of a an empirical study reveal the following: n= 250, sample mean = 140, sample…
A:
Q: he average amount of time in individual stopped by the police officers by the time they are 30 years…
A: The summary of the statistics is, x¯=6σ=1.2μ=5n=25 Assume the level of significance is, α=0.05
Q: You are testing the claim that the mean GPA of night students is different from the mean GPA of day…
A: Given: n1=60x1=2.83s1=0.52 n2=50x2=3.21s2=0.65 The…
Q: A new diet is being tested. The inventor claims people lose 10 pounds on average after 6 weeks. 25…
A:
Q: A researcher wants to know if the average age of hospital patients is over the reported value of…
A: 1. Suppose μ is the population average age of hospital patients.
Q: B5. A transport company claimed that on average a lorry covers at least 100 miles distance in one…
A: Givensample size(n)=50Mean(x)=90standard deviation(σ)=2.8α=0.05
Q: Toplem 2: B. Test on means for to Sample test on means for Your and talk about your friends are at a…
A:
Q: 3. A sample of 26 pieces of data is collected and we wish to perform the a=.05 level test Ho:u=6 vs.…
A: Given , Hypothesis : H0 : μ= 6 H1 : μ> 6 Right tailed test. Test statistic = z = 1.61
Q: The mean age when smokers first start is 13 years old with a population standard deviation of 2…
A: The following information has been provided Hypothesized population = 13 Sample mean = 12.3 Standard…
Q: Question 4 KE Quesion 4 of 10 The mean undergraduate Gost for tuition, fees, room and board for four…
A:
Q: 4. Which of the following better approximates the standard deviation of the sample means? a. b. 2.…
A: We have given the following statement about the standard deviation of the sample mean.
Q: Assume the average amount of days a patient spends in hospital is believed to be 14 days and a…
A: Given Mean=Xbar=12.5 Standard deviation=sigma=4.8 n=sample size=33 mu=14 Alpha=0.05
Q: 3. A simple random sample of a daily lift ticket price from 40 different ski resorts is obtained.…
A: Given Sample size, n=40 Sample mean, x¯=108.50 Sample standard deviation, s=17.90 α=0.05
Q: L. A group of environmental science students from the College of Science wished to determine an…
A: The species was wing length with a mean of 17.6 millimeters; μ=17.6 Students measured the wing…
Q: The average number of accidents at controlled intersections per year is 4. Is this average a…
A: The random variable is number of accidents.We have to test whether the population mean number of…
Q: 04: The mean level of prothrombin in the Iraqi population is known to be approximately 20 mg/ 100 ml…
A: Let the population mean is denoted by μ and given by μ=20 and the population standard deviation,…
Q: Determine if one-tailed test or two-tailed test fits the given alternative hypothesis. 1. The mean…
A: Hypothesis : It is a statement about the parameter or statistical distribution that we have to…
Q: Based on this information, the number of points scored in the final game was which of the following?
A: Given For N = 25 games , average = 78 points standard deviation = 12 points For final game, team…
Q: mperature at which a certain compound melts is a random variable with mean value 115°C and standard…
A: It is given that the temperature at which certain compound melts are a random variable with a mean…
Q: To estimate the mean score ?� of those who took the Medical College Admission Test on your campus,…
A: According to the information provided in the question, we have to find the standard deviation so…
Q: 10. A researcher claims that the mean monthly consumption of coffee per person is more than 19 cups.…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: The number of ants acre in the forest is normally distributed with mean 44,000 and standard…
A:
Q: Can you help me find the p-value for this problem
A: Variable definition: Let μ be the mean number of cars that use the road on a daily basis.…
Q: Supposed the standard deviation of the ages of all the Florida panthers is 13.2 years. Let’s x̅ be…
A:
Q: Suppose that water usages in American showers are normally distributed, with an average shower using…
A: Given Information: μ=20 and σ=3.2 (b) To estimate the percentage of showers that used more than 26.4…
Q: A confused Stat Professor claims the mean height of men is 66". His students take a sample of 16 men…
A: We have to select correct option that is true for given test
Q: The average square footage of a US single-family home is 2000 square feet With a standard deviation…
A: The Chebychev's rule states that at least 1-1k2100% lie within k standard deviations from mean, that…
Q: Patients with an average blood pressure of 140 and above are classified as having hypertension. Over…
A: Given information- We have given the data on the patient's blood pressure. We have given the output…
Step by step
Solved in 2 steps with 1 images
- Cannot use excelFor the unusual values, what do I put in the missing box meaning how do I answer it?Test the claim that the standard deviation of the ages of Phychologist in California us 7.3 at 0.01 level of significance. a random sample of 15 psychologist had a standard deviation of 6.9. Find the test value
- 26.Do men take more time than women to get out of bed in the morning? The 48 men observed averaged 7.2 minutes to get out of bed after the alarm rang. Their standard deviation was 1.1. The 45 women observed averaged 6 minutes and their standard deviation was 2.5 minutes. What can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer t-test for a population mean t-test for the difference between two dependent population means t-test for the difference between two independent population means z-test for the difference between two population proportions z-test for a population proportion The null and alternative hypotheses would be: H0:H0: Select an answer p1 μ1 Select an answer = < ≠ > Select an answer p2 μ2 (please enter a decimal) H1:H1: Select an answer μ1 p1 Select an answer = > < ≠ Select an answer p2 μ2 (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal places.) The…Plz plz answer all parts.just the multiple choice question
- 1. The amount of time that people spend at Grover Hot Springs is normally distributed with a mean of 76 minutes and a standard deviation of 16 minutes. Suppose one person at the hot springs is randomly chosen. Let X = the amount of time that person spent at Grover Hot Springs. Round all answers to 4 decimal places where possible.A. Find the(IQR) for time spent at the hot springs.Q1, Q3 IRQ: minutes 2. The average American man consumes 9.5 grams of sodium each day. Suppose that the sodium consumption of American men is normally distributed with a standard deviation of 1 grams. Suppose an American man is randomly chosen. Let X = the amount of sodium consumed. Round all numeric answers to 4 decimal places where possible.B. The middle 20% of American men consume between what two weights of sodium? Low___High____Assume you are thinking about starting a Mensa chapter in your hometown, which has a population of about 10,000 people. You need to know how many people would qualify for Mensa, which requires an IQ of at least 130. You realize that IQ is normally distributed with a mean of 100 and a standard deviation of 15. Complete the following. Find the approximate number of people in your hometown who are eligible for Mensa. Is it reasonable to continue your quest for a Mensa chapter in your hometown? why? How could you proceed to find out how many of the eligible people would actually join the new chapter? Be specific about your methods of gathering data. What would be the minimum IQ score needed if you wanted to start an Ultra-Mensa club that included only the top 1% of IQ scores?An exam score has a mean of 78 and a standard deviation of 9. What is the z-score for an exam score of 64.5? What is the z-score for an exam score of 82.5? Which exam score is more unsual, 64.5 or 82.5? O An exam score of 64.5 is more unsual because its corresponding z-score is further from 0. O An exam score of 82.5 is more unusual because its corresponding z-score is further from 0.
- Q3: There is claim that the mean annual turnover rate of the 300 count bottle of B Aspirin is changed. Therefore a random sample of 33 is chosen that show the average is 10 and the standard deviation is 7. Use 0.05 significant level If the test statistics is -9, he claim mean isA data set consisting of 175 standardized test scores is known to have a bell-shaped (normal) distribution with a mean of 71 and a standard deviation of 9. Use the Empirical Rule to address the following questions. Hint: sketch the distribution to help visualize the problem. Approximately 95% of the test scores lie between 53 and 89 What approximate percentage of the test scores lie between the scores 44 and 98? What approximate percentage of the test scores lie between the scores 62 and 80? 68 Question Help: Video Submit QuestionAn IQ test has a mean of 104 and a standard deviation of 10. Which is more unusual, an IQ of 94 or an IQ of 122? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. An IQ of 122 is more unusual because its corresponding z-score, is further from 0 than the corresponding z-score of for an IQ of 94. (Type integers or decimals rounded to two decimal places as needed.) O B. An IQ of 94 is more unusual because its corresponding z-score, (Type integers or decimals rounded to two decimal places as needed.) is further from 0 than the corresponding z-score of for an IQ of 122. O C. Both IQs are equally likely.