Start your trial now! First week only $4.99!*arrow_forward*

Question

1. State the test statistic: *t =*

2. State the p-value:

3. Decision:

- Fail to reject the null hypothesis
- Reject the null hypothesis

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: Seeds Information on a packet of seeds claims that thegermination rate is 92%. What’s the probabilit...

A: Click to see the answer

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A: Obtain the sample size of a preliminary estimate for p with 0.70. The formula of sample size is, Us...

Q: The average score for games played in the NFL is 22.5 and the standard deviation is 9.2 points. 50 g...

A: Click to see the answer

Q: In our Condor Cafe, the Oxnard College Culinary Program offers the most delicious and affortable bre...

A: Given Information Sample size(n) = 298 orders No of orders(x) = 105

Q: You want to obtain a sample to esimate a population proportion. At this point in time you have no re...

A: Click to see the answer

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adul...

A: The level of significance is 0.10 (=1–0.90). Using Excel formula “=NORM.S.INV(1-(0.1/2))”, the criti...

Q: looking for assistance

A: Click to see the answer

Q: Assume that a simple random sample has been selected from a normally distributed population and test...

A: State the hypotheses. That is, there is no evidence to conclude that the sample is from a populatio...

Q: The average score for games played in the NFL is 22.5 and the standard deviation is 9.2 points. 50 g...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: Given that X̄=20, σ=9 and n=81, construct the following confidence intervals: the 98% confidence int...

A: Click to see the answer

Q: Express the confidence interval (36.5%,53.5%) in the form of ˆp±E % ± %

A: Obtain the point estimate of the proportion. The point estimate of the proportion is obtained below:...

Q: How to find probabilities

A: Concept of probability: Probability deals with the likelihood of occurrence of a given event. The pr...

Q: Ho: p= 20 H1: µ #20 X=21.5 s=5 n=25 and a=.01 The decision of the test is: reject Ho accept Ho More ...

A: Click to see the answer

Q: Construct the confidence interval for the population mean u. c = 0.90, x= 5.7, o = 0.8, and n= 53 A ...

A: Click to see the answer

Q: I need help finding the answers that go into the yellow boxes :) thank you so much!

A: Solution: Excel code or input:

Q: A newsgroup is interested in constructing a 95% confidence interval for the proportion of all Americ...

A: Click to see the answer

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe t...

A: Click to see the answer

Q: Roulette A casino claims that its roulette wheel is trulyrandom. What should that claim mean?

A: The given claim is that the roulette wheel is truly random.

Q: Ho: p= 20 H1: H #20 X=21.5 s=5 n=25 and a=.01 The value of the Z or t-table is: 2.797 2.787 2.576 2....

A: State the hypotheses. That is, the population mean equals 20. That is, the population mean do not ...

Q: A newsgroup is interested in constructing a 90% confidence interval for the difference in the propor...

A: Click to see the answer

Q: A psychologist is interested in constructing a 99% confidence interval for the proportion of people ...

A: From the provided information, Sample size (n) = 821 Out of which 73 agreed with the provided theory...

Q: Given that the population mean is 45 and population standard deviation is 8. What is the probability...

A: Click to see the answer

Q: Given that 200 items of 800 are defective, construct the following confidence intervals for the popu...

A: Click to see the answer

Q: Phone surveys Anytime we conduct a survey, we musttake care to avoid undercoverage. Suppose we plan ...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: What design? Analyze the design of each researchexample reported. Is it a sample survey, an observat...

A: a) Here the researchers observed the respondents (the rats) whether gene therapy stops the degenerat...

Q: In a survery of 199 households, a Food Marketing Institute found that 65 households spend more than ...

A: Click to see the answer

Q: Students should spend average of 12 hours studying. Survey done on 25 students and the distribution...

A: The provided information are:

Q: Swimsuits A swimsuit manufacturer wants to test thespeed of its newly designed suit. The company des...

A: Click to see the answer

Q: In a certain school district, it was observed that 29% of the students in the element schools were c...

A: Click to see the answer

Q: Benefits Fifty-six percent of all American workers have a workplace retirement plan, 68% have health...

A: Note: Hey, since multiple sub parts are posted, we will answer first three sub parts according to ou...

Q: You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe t...

A: From the provided information, Population standard deviation (σ) = 47.9 Margin of error (E) = 1 Conf...

Q: Frogs A wildlife biologist examines frogs for a genetictrait he suspects may be linked to sensitivit...

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we ...

Q: You want to obtain a sample to esimate a population proportion. Based on previous evidence you belie...

A: It is given that p hat is 0.21 and margin of error 0.01.

Q: In a random sample of 23 people, the mean commute time to work was 32.1 minutes and the standard dev...

A: Click to see the answer

Q: Interest rates and mortgages again In Chapter 6,Exercise 33, we saw a plot of mortgages in the Unite...

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have s...

Q: Be quick! Avoiding an accident when driving can de-pend on reaction time. That time, measured from t...

A: Click to see the answer

Q: Eligibility A university requires its biology majors totake a course called BioResearch. The prerequ...

A: a. A university requires its biology majors to take a course called Bioresearch. There is about 52% ...

Q: Vineyards Here are the scatterplot and regression analy-sis for Case Prices of 36 wines from vineyar...

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are sol...

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may var...

A: Click to see the answer

Q: An appliance dealer's website features the mean life expectancy values for major household appliance...

A: Standard normal distribution: The standard normal distribution is a special case of normal distribut...

Q: Listed below are time intervals (min) between eruptions of a geyser. Assume that the "recent" times ...

A: The given data set is. Recent 79 90 89 80 58 100 63 88 71 87 81 82 55 ...

Q: Suppose we observe 84 alcoholics with cirrhosis of the liver, of whom 29 have hepatomas—that is, liv...

A: PMF of binomial distribution is given as Where K= number of success in trials n= number of independ...

Q: A smart phone manufacturer is interested in constructing a 90% confidence interval for the proportio...

A: a) The sample size n= 1595.for The sample proportion is 90/1595=0.0564. The absolute value of Zα/2 i...

Q: You are interested in finding a 95% confidence interval for the average commute that non-residential...

A: Given data and calculation for mean and standard deviation is shown below

Q: H0 : µ= 60 H1 : µ > 60 X̄=62 σ=10 n=100 and α=.05 The computed value of Z (Zc ) or t (...

A: Click to see the answer

Q: Life expectancy 2010 Data for 24 Western Hemispherecountries can be used to examine the association ...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for ...

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you bel...

A: Click to see the answer

Q: A new fertilizer was applied to the soil of 292 bean plants. 44% showed increased growth. Find the m...

A: Given information Proportion of plant showed growth = 0.44 No of bean plants (n) = 292

Q: You are conducting a study to see if the probability of a true negative on a test for a certain canc...

A: The given information is that the sample size of 747 in which there are 610 successes. Given hypothe...

Q: A botanist wishes to estimate the typical number of seeds for a certain fruit. She samples 65 specim...

A: Click to see the answer

Transcribed Image Text

Statistics students believe that the mean score on a first statistics test is 65. The instructor thinks that the mean score is higher. She samples 10 statistics students and obtains the scores: Grades 63.9| 68.4 | 69 96 64.3 63.9 65 69 62.7 68.4