At the significance level α = 0.05, can we accept the statement from the Association ?
Q: age re average Catholic in church on Sundays? The 56 randomly observed members of the Presbyterian…
A:
Q: A random sample of 36 orders at a fast food restaurant was studied to determine the amount of the…
A: given data, n=36df=n-1=36-1=35X¯=15.50s=8.98claim:μ<20α=0.05
Q: 3. A taxi company claims that its drivers have an average of at least 12.4 years' experience. In a…
A:
Q: 1..The null hypothesis of Ho is? 2.The alternative hypothesis is? 3.The test to be used is-
A: Given that Sample size n =40 Sample mean =89 Standard deviation =10 NOTE:- According to bartleby…
Q: company has a policy of retiring company cars; this policy looks at number of miles driven, purpose…
A:
Q: A researcher claims that the amounts of sugar in a certain brand of soft drink have a mean different…
A:
Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…
A: Given, x=745σ=300n=60α=1-0.99=0.01 i). The hypothesis to be tested is obtained as-…
Q: company has a policy of retiring company cars; this policy looks at number of miles driven, purpose…
A: Given data Normal distribution μ = 45σ = 4 empirical rule : approximately 68 -95- 99.7 % data fall…
Q: . The fuel efficiency of an SUV is measured in miles per gallon (mpg). A company claims that their…
A: Given Sample mean x̄=29.2,n=33,s=5.8
Q: Ho: μ = Ha: Select an answer α= P-value = Based on the above we choose Question Help: Post to foru…
A: Given that, Hypothesized Population Mean (µ) = 48722 The provided sample mean is X = 49870…
Q: A hot tub manufacturer advertises that with its heating equipment, a temperature of 100°F can be…
A: The question is about hypothesis testing.Given :Randomly selected no. of tubs ( n ) = 25Sample mean…
Q: A random sample of 88 eighth grade students' scores on a national mathematics assessment test has a…
A: Given Information: Sample size (n) = 88 Sample mean (x¯) = 293 Hypothesized value of population mean…
Q: A technology manufacturing company has recently switched to the production of isolinear processors.…
A:
Q: A somewhat outdated study indicates that the mean number of hours worked per week by software…
A: Given : Population mean=44 Sample mean=39 Standard deviation =3
Q: The amounts of nicotine in a certain brand of cigarette are normally distributed with a mean of…
A:
Q: the & = 0.10 level of significance? a. For this study, we should use Select an answer b. The null…
A: It is given that Population mean = 93 Sample mean = 100.5 Standard deviation = 22 Sample size = 12…
Q: Which of the farms are unusual (more than two standard deviations from the mean)? S
A: Given that Mean = 1600 And SD = 300 Also the distribution is bell shaped.
Q: The Water Resource Department claims that the mean pH level of the river water is 6.8. You randomly…
A: Given,sample size(n)=19sample mean(x¯)=6.7sample standard deviation(s)=0.24population…
Q: The average starting salary of students who graduated from colleges of Business in 2009 was $48,400.…
A:
Q: For a 4-units class like Statistics, students should spend average of 12 hours studying for the…
A:
Q: The average American consumes 89 liters of alcohol per year. Does the average college student…
A:
Q: Company ABC's customer retentions per site are normally distributed with a standard deviation of 21…
A: Solution: Let X be the Company ABC’s customer retentions per site. From the given information, X…
Q: . The monthly expenditure of a family was observed to be normally distributed with mean ofGhc400 and…
A:
Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: A set of exam scores is normally distributed with a mean = 72 and standard deviation = 9. Use the…
A: Explanation: Given: mean μ=72 Standard deviation σ=9
Q: 6. A manufacturer makes a particular car part that is supposed to have a mean weight of 30 g. An…
A: The claim is that the mean weight is less than 30 g.
Q: Suppose a random sample of 25 individuals is taken and that average annual salary for that sample is…
A: From the given information, Sample size (n) =25 x=54000s=12000 Since, population standard…
Q: In a random sample of 6 cell phones, the mean full retail price was $541.20 and the standard…
A: The given data is as follows:Sample size, Sample mean, Sample standard deviation, Population mean,
Q: In 2012, the mean retail price of all history books was $76.38, This year retail price for 45…
A:
Q: Does the average Presbyterian donate less than the average Catholic in church on Sundays? The 51…
A: Given that Sample sizes n1=51 , n2=54 Sample means X̄1=27 , X̄2=33 s1 =5…
Q: 2 The FCC conducts broadband speed tests to measure how much data per second passes between a…
A: We have given that Sample size n= 15 Population standard deviation = 12.2 Sample standard deviation…
Q: People with high blood pressure suffer from hypertension. Data on fasting blood sugar…
A: Given: Data on fasting blood sugar (milligrams/decilitre) and magnesium (milligrams/decilitre) in…
Q: A nationwide test taken by high school sophomores and juniors has three sections, each scored on a…
A:
Q: 4. Dougall compared the resting heart rate of average healthy citizens and soldiers suffering from…
A: Given Data : For Sample 1 x̄1 = 65.0 s1 = 6.0 n1 = 25 For Sample 2…
Q: Tipping. In the article “Are Christian/Religious People Poor Tippers?” (Journal of Applied Social…
A:
Q: Assume that adults have IQ scores that are normally distributed with a mean of 98.4 and a standard…
A: To find: a. The first quartile
Q: A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a mean…
A: Given: n = 29 x¯ = 597.9 s = 3.8 α = 0.01
Q: According to the College Board, scores on the math section of the SAT Reasoning college entrance…
A: Given information, Mean =516 Standard deviation =116
Q: Justine is an analyst for a sleep study center. She believes that the average adult in a certain…
A:
Q: OHA: 22.3 b. What is the correct distribution to use for the test? Select an answer c. What is the…
A: Followings are the Explanation of the question Use the Two sample independent t test when standard…
Q: 4.0 2.0 3.0 1 0 1
A: To calculate the probability of admission for a student with Verbal of 153, Quant of 154, and AWA of…
Q: The test statistic is calculated to be 1.756. Using a 5% level, the conclusion would be
A: Given : A producer of televisions claims that his product will last at least 10 years on average.…
A motorists association says the average annual operating cost of a car is $3,600
with a standard deviation of $800. To verify this assertion, we
takes a sample of 64 motorists among whom we find
an average annual operating cost of $3,950. At the significance level α = 0.05, can we accept the statement
from the Association ?
Step by step
Solved in 3 steps with 1 images
- A random sample of 89 tourists in British Columbia showed that they spent an average of $2860 (in a week) with an assumed population standard deviation of $126; and a sample of 64 tourists in Alberta showed that they spent an average of $2935 (in a week) with an assumed population standard deviation of $138. We are interested in determining if there is any significant difference between the average expenditures of all the tourists who visited the two provinces.a. At a significance level of 0.05, are the two average expenditures significantly different? b. Calculate the 99% confidence interval and interpret your results?A student suspected the average cost of a Saturday night date was now greater than $30. To test her hypothesis, she randomly selected 16 men from the residence hall and asked how much they spent on a date last Saturday night. She found that in her sample, the average amount spent $32.75, the standard deviation was $5.25, and that the histogram of sample was unimodal and roughly symmetric. At , is there enough evidence to support her claim. What type of test would she use? One-sample proportion test One-sample t-test Two-sample proportion test Two-sample t-testA set of exam scores is normally distributed with a mean = 82 and standard deviation = 6.Use the Empirical Rule to complete the following sentences.68% of the scores are between and .95% of the scores are between and .99.7% of the scores are between and .
- The mean score on a driving exam for a group of driver’s education students is 76 points, with a standard deviation of 6 points. Apply chebychev’s theorem to the data using K=2. Interpret, At least ___% of the exam score falls between ___and ____In a sample of 80 business trips taken by employees in the HR department, a company finds that the average amount spent for the trips was $1580 with a standard deviation of $350. In a sample of 80 trips taken by the employees in the sales department is $1750 with a standard deviation of $550. When testing the hypothesis that the averageamount spent on trips taken by the salesepartment are higher than those taken by the HR department, if the test statistic is 2.33 and the critical value is 1.96 then what is your conclusion concerning the null hypothesis? Reject the null hypothesis Fail to reject the null hypothesisThe average American consumes 89 liters of alcohol per year. Does the average college student consume less alcohol per year? A researcher surveyed 15 randomly selected college students and found that they averaged 87.3 liters of alcohol consumed per year with a standard deviation of 15 liters. What can be concluded at the the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: ? Select an answer V Н: ? v Select an answer V c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... the null hypothesis. O The data suggest the population mean is not significantly less than 89 at a = 0.05, so there is statistically insignificant evidence to conclude that the population mean amount of alcohol consumed by college students…
- A report states that the mean yearly salary offer for students graduating with a degree in accounting is $48,722. Suppose that a random sample of 50 accounting graduates at a large university who received job offers resulted in a mean offer of $49,870 and a standard deviation of $3900. Do the sample data provide strong support for the claim that the mean salary offer for accounting graduates of this university is higher than the national average of $48,722? Ho: μ = Ha: (Put in the correct symbol and value) ✓ Select an answer a not = P-value: = ↑ Based on the above we choose to Select an answer Question Help: Post to forum Submit QuestionWhen students use the bus from their dorms, they have an average commute time of 8.263 minutes with standard deviation 2.9321 minutes. Approximately 75.67% of students reported a commute time greater than how many minutes? Assume the distribution is approximately normal. Question 10 options: 1) 6.22 2) 2.28 3) 14.24 4) 10.3 5) We do not have enough information to calculate the value.Which is cheaper: eating out or dining in? The mean cost of a steak, salad, and rice bought at the grocery store is $13.04. A sample of 30 neighborhood restaurants showed a mean price of $12.15 and a standard deviation of $2 for a comparable restaurant meal. 1.1) Develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than $13.04. 1.2) At alpha = 0.05, what is your conclusion? Show a detailed solution to support your conclusion. (Find p-values at: https://www.socscistatistics.com/pvalues/tdistribution.aspx)
- The mean annual tuition and fees for a sample of 14 private colleges in California was $37,900 witrh a standard deviation of $7,200. A dotplot shows that it is reasonable to assume that the population is approxiamately normal. Can you conclude that the mean tuition and fees for private institutions in California differs from $35,000? a. State the null and alternate hypothesis. b. Compute the value of the t statistic. How many degrees of fredom are there?2. The average gasoline price of one of the major oil companies has been $1.00 per gallon. Because of shortages in production of crude oil, it is believed that there has been a significant increase in the average price. In order to test this belief, we randomly selected a sample of 36 of the company's gas stations and determined that the average price for the stations in the sample was $1.04. Assume that the standard deviation of the population (o) is $0.12. a) State the null and the alternative hypotheses for testing the belief. b) Describe a Type I error and a Type II error for this situation. c) What is the critical value at a = .05? d) what's your What is the t-statistic or z-statistic associated with the above sample results?According to the Annual survey of drugs expenditure in country X, the annual expenditure forprescription drugs is $838 per person in the Northeast region of the country. A sample of 60 individualsin the Midwest shows a per person expenditure for prescription drugs of $745. Further, it is given thatthe population standard deviation of $300 Make the final conclusion based on the analysis