With 0.05 significance level, H1: p > 0.5, and the value of test statistics is z = 1.25. Then
Q: Range anxiety is one of the reasons consumers are reluctant to switch to an electric vehicle, and…
A: Given information: x 89 90 91.5 92 92.5 95 95.5 96 93 93.5 94 94 91…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…
A: Given X=108
Q: Given a sample mean of 94.3, a sample size of 6, test the hypothesis that the value of the…
A: xbar = 94.3 n = 6 mu = 100 s = 12.5
Q: Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the…
A:
Q: Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the…
A: The random variable pulse rate follows normal distribution. We have to test whether the mean pulse…
Q: Male 0.48 0.36 0.20 0.55 0.45 0.46 0.47 0.23 Female 0.35 0.37 0.27 0.29 Is there any evidence that…
A:
Q: The level of significance alpha most commonly used are: 0.01, 0.05, 0.1. True False
A: Type I error: A Type I error (false alarm) occurs when a true null hypothesis is rejected.
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of…
A: The given linear regression equation is, Here, slope = 0.96 Intercept = 4.86
Q: If n=185, x=5.82, s= 2.16. Is the claim correct that the mean is less than 6.00 with a significance…
A: n=185 , x=5.82 , s=2.16 Null Hypothesis : Statement with no significant difference in the…
Q: (c) The P-value is
A: here from given information claim: two samples given comes from populations with same mean
Q: Thirty GPAs from a randomly selected sample of statistics students at a college are linked below.…
A: The technician in charge of records claimed that the population mean GPA for the whole college is…
Q: What is the p-value if you are doing a two-tailed test?
A: We have given that The z-statistic is, z = 1.15
Q: The population mean of the heights of five-year old boys is 100cm. A teacher measures the height of…
A:
Q: A researcher wants to test the average time it takes to solve a puzzle. They randomly sample 50…
A: Given: Sample size n=50 Sample mean x¯=8 Sample standard deviation s=2 Significance level α=0.05
Q: A data set about speed dating includes "like" ratings of male dates made by the female dates. The…
A: Given that x̄ = 6.57 , μ = 7 , s = 1.85 , n = 188
Q: The average shelf life of a beverage was sought to be examined. Shelf lives (days) for 5 randomly…
A: For the given data we find Mean= summation Xi/n Here n= 5 = (85+90+95+100+105)/5 = 375/5 X bar =…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A: y^=14.46+0.88x x¯=96.41 y¯=99.25 r=0.877 P-value=0.000
Q: A random sample of 36 cans of soda is obtained and the contents are measured. The sample mean is…
A: Given Population mean μ=12, n=36, sample mean x̄=12.05, s=0.11
Q: alue for a right-tailed test using a significance level of ?=0.02.α=0.02
A: To find the z value, use the standard normal table to find the z-score which cuts off an area of…
Q: The claim is that smokers have a mean cotinine level greater than the level of 2.84 ng/ mL found for…
A: Given,sample size(n)=738population mean(μ)=2.84Test statistic(t)=54.846α=0.10 degrees of…
Q: QUESTION 22 A cereal company claims that the mean weight of Brand A cereals is less than 16 oz. The…
A: given data, a cereal company claims that the mean weight of brand A cereals is less than 16…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of…
A:
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The20 pairs of measurements…
A: Given Alpha=0.05 X=97
Q: Assume a significance level of 0.02. What decision would you make if your p-value was 0.008? O…
A: Givensignificance level(α)=0.02p-value=0.008
Q: Pulse Rate (bpm) 101 66 78 103 80 58 86 93 80 64 44 45 96 77 93 62 88 67 73 81 103 90 62 88 66 105…
A: The random variable X follows normal distribution. A sample of 46 observations is given. We have to…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…
A: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…
Q: given that the sample mean=105, pop standard deviation=27, n=44, a=0.01 what is the critical s-score
A: Note: In this question it has mentioned that we have to find the s – score but it seems that it is a…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A: The given regression represents simple linear regression model. The correlation coefficient is r =…
Q: A safety administration conducted crash tests of child booster seats for cars. Listed below are…
A: Given data : 670 603 1014 534 501 662
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A:
Q: Historically, the mean systolic blood pressure (SBP) has been a rather high 139 units for adults in…
A:
Q: Use the following information : n = 16 , hypothesized mean µ = 15 , sample mean = 16 , σ 2 =…
A: Given information: Sample size (n)=16. The hypothesis to be tested here is:
Q: The claim is that smokers have a mean cotinine level greater than the level of 2.84 ng/mL found for…
A: given data, claim : μ>2.84n=911t= 56.944p-value =?α=0.01we have to find out the p-value and…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of twins. The 20 pairs of measurements…
A: Obtain the predicted value of y given that the twin born first has an IQ of 99. The predicted…
Q: Use the pulse rates in beats per minute (bpm) of a random sample of adult females listed in the…
A: x¯ = 65.05 s = 22.131 n = 50
Q: Which of the following is calculated by subtracting the Type II error from 1? 1. Type I error 2.…
A: We know, if H0 is null hypothesis and H1 be alternative hypothesis. Then level of significance =P(…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…
A: It was stated to suppose that IQ scores were obtained for 20 randomly selected sets of siblings. The…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of…
A: Here we've given that ,the IQ scores were obtained for 20 randomly selected sets of couples , n =…
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: Two separate samples, each with 16 individuals, receive two different treatments. After treatment,…
A: The pooled variance is, Thus, the pooled variance is 13.333.
Q: The recidivism rate for convicted sex offenders is 9%. A warden suspects that this percent is higher…
A: Note: Hi! Thank you for the question. Based on the question you have posted, along with the already…
Q: Suppose IQ scores were obtained for 20 randomly selected sets of siblings. The 20 pairs of…
A: Given : The given regression line equation is y=−8.44+1.1x,
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Assume a significance level of a = 0.01 and use the given information to complete parts (a) and (b) below. Original claim: The mean pulse rate (in beats per minute) of a certain group of adult males is 68 bpm. The hypothesis test results in a P-value of 0.0061. O A. Reject H, because the P-value is less than or equal to a. O B. Fail to reject H, because the P-value is less than or equal to a. O C. Fail to reject Ho because the P-value is greater than a. O D. Reject H, because the P-value is greater than a. b. Without using technical terms, state a final conclusion that addresses the original claim. Which of the following is the correct conclusion? O A. There is not sufficient evidence to warrant rejection of the claim that the mean pulse rate (in beats per minute) of the group of adult males is 68 bpm. O B. The mean pulse rate (in beats per minute) of the group of adult males is not 68 bpm. O C. There is sufficient evidence to warrant rejection of the claim that the mean pulse rate (in…Suppose a study reported that the average persin watched 3.37 hours of television per day. a random sample of 15 people gave the number of hours of television watched per day shown below. at the 1% significance level, do the data provide sufficent evidence to conclude that the amount of television watched per day last year by the average person is greater than the value reported in the study? what is the test statistic value for this problem? a.0.28 b.-38 c.none of the above d. 0.58 e.-4.295 f..04 g. 1.94 . the proper conclusion for this problem is? a. reject the null hypothesis we have sufficent evidence to prove the average number of hours people watch tv is more than 3.37 hours. b. Do not reject the null hypothesis we have sufficient evidence to prove the average number of hours of TV watched is greater than 3.37 hours c. Reject the null hypothesis and claim the average number of hours people watch TV is less than 3.37 because the P value is near zero d. Do not reject the null…Two possible p-values are given. Which one provides the strongest evidence against H0? p -value=0.5 p-value=0.06
- The coach of a very popular men’s basketball team claims that the average distance the fans travel to the campus to watch a game is 35 miles. The team members feel otherwise. A sample of 16 fans who travel to games was randomly selected and yielded a mean of M= 36 miles and s= 5 miles. Test the coach’s claim at the 5% (.05) level of significance. one-tailed or two-tailed test: State the hypotheses: df= tα or t value for the critical region = sM = t (test statistic)= Decision:A local brewery distributes beer in bottles labeled 32 oz. believing the SD=1.5. A government agency thinks that the bottles are not correct. The agency selects 50 of these bottles, measures their contents, and obtains a sample mean of 32.4 oz. Test at the 0.03 significance level. 1. The graph is (give one answer: L - Left tailed, R - Right tailed, 2 - Two-Tailed) 2. Critical Value (start with negative and separate with a comma if there are 2) 3. Test statistic 4. The 3-decimal p-Value 5. Test statistic is where compared to CV? (Give a letter: L - Left, M - Middle R - Right)Find the standardized test statistic t for a sample with n = 20, x=6.8, s= 2.0, and o = 0.05 if Hau < 7.2, Round your answer to three decimal places.
- A sample mean is 94, sample size is 27, and population standard deviation is 14 are given. Ho: p=89, Hl: μ#89 and a significance level is 0.10. Use the P-value approach to test the hypothesis. O a z=186; P-value = 0.0314; reject null hypothesis O b. z 186, P-value = 0.0628; reject null hypothesis O c. z=0.36; P-value = 0.7188, do not reject null hypothesis Od. z=0.36, P-value = 0.3594; do not reject null hypothesisChoose one word that fits the sentence: Based on the P-value, there is or is not sufficient evidence at a significance level of 0.01 to warrant rejection of or support the claim that for 7 AM for body temperatures of females, the mean is less than 98.6 F.Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"
- Q5. With 0.05 significance level, H1: p > 0.5, and the value of test statistic is z = 1.93. Then theP-value is equal to 0.9732.a. Trueb. False13.34 Women's heights. The heights of adult women are approximately Normal with mean 69.2 inches and standard deviation 2.5 inches. How tall are the tallest 10% of women? (Use the closest percentile that appears in Table B.)Suppose IQ scores were obtained for 20 randomly selected sets of couples. The 20 pairs of measurements yield x = 101.02, y = 100.75, r = 0.852, P-value = 0.000, and y = 5.93 + 0.94x, where x represents the IQ score of the husband. Find the best predicted value of y given that the husband has an lQ of 100? Use a significance level of 0.05. %3D Click the icon to view the critical values of the Pearson correlation coefficient r. The best predicted value of y is Critical values of the pearson correlation coefficient r (Round to two decimal places as needed.) Critical Values of the Pearson Correlation Coefficient r X = 0.05 a = 0.01 INOTE: To test Ho: p=0 n Jagainst H,: p+0, reject Ho if the absolute value of r is greater than the critical value in the table. 4 0.950 0.990 0.878 0.959 0.811 0.917 7 0.754 0.875 0.707 0.834 0.666 0.798 10 0.632 0.765 11 0.602 0.735 12 0.576 0.708 13 0.553 0.684 14 0.532 0.661 15 0.514 0.641 16 0.497 0.623 17 0.482 0.606 18 0.468 0.590 19 0.456 0.575 20 0.444…