What is the critical value for this test? (Report answer accurate to three decimal places.) critical value 3.291 X
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A: Introduction: Denote p as the true proportion of adults who believe that their taxes will be audited…
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A: State the hypotheses. That is, the true proportion of adults in a certain country think that their…
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A: The margin of error (E) is obtained below From the given information, standard deviation is 2.1 and…
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A: Solution
Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o=2.4, n 100 Click the icon…
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Q: Part 2 of 5 Find the critical value(s). Round the answer(s) to at least three decimal places. If…
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A: Solution Step 1
Q: A medical researcher says that less than 79% of adults in a certain country think that healthy…
A: The question is about hypo. testing for a population prop. Given : According to medical research,…
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A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…
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A: The pooled variance is, sp2=n1-1s12+n2-1s22n1+n2-2=100-126.6372+15-1223.7782100+15-2=691.6722 The…
Q: Part: 1 /5 Part 2 of 5 Find the critical value(s). Round the answer(s) to at least three decimal…
A: For Hard body types : Count, N: 16 Sum, Σx: 279 Mean, x̄1 =Σx/N 17.4375 Variance, s2:…
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A: regression analysis
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Q: Find the margin of error for the given values of c, o, and n. c = 0.90, o = 3.5, n 100 ar Click the…
A: According to the given information, we have c = 0.90 Standard deviation = 3.5 Sample size = 100
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A: According to the provided information, α=0.05df=1
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Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o = 3.5, n 36 Click the icon…
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A: The hypothesized mean is 16.
Q: Find the critical value(s). Round the answer to at least two decimal places. If there is more than…
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A: xbar = 109 se = 1.34 n = 23
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A: Solution-: Given: M.E.=0.03, c=0.90 We want to find sample size for (a) She uses a previous estimate…
Q: Find the margin of error for the given values of c, o, and n. c = 0.95, o = 3.5, n = 100 Click the…
A: The margin of error is the product of critical value and the standard error.
Q: Part 2 of 5 Find the critical value(s). Round the answer(s) to three decimal places, if necessary.…
A: Given : x1= 72.0 n1= 364 x2= 23.0 n2= 184 significance level, 0.01…
Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o = 3.2, n 81 Click the icon…
A:
Q: medical researcher says that less than 79% of adults in a certain country think that healthy…
A: The question is about hypo. testing for popl. prop. Given : Hypothesized prop. of adults who thinks…
Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o = 2.9, n 100 Click the icon…
A: From the given information, The provided data is as given below: c=0.90σ=2.9n=100 Thus,
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A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: iv. For a significant level of 0.05, what is the critical value (or critical region)?
A: For the given information in the question Significance level = 0.05 Since the researcher wants to…
Q: A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What…
A: Plug in all the values in the formula, we get Round the value to the nearest integer.
Q: Find the margin of error for the given values of c, o, and n. c = 0.95, o = 2.8, n = 81 Click the…
A: We have given that, Population standard deviation (σ) = 2.8, confidence level (c) = 0.95 or 95% and…
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A: Denote p1, p2 as the true population proportions of successes of first and second population,…
Q: Find the margin of error for the given values of c, o, and n. c= 0.95, o = 2.1, n 49 Click the icon…
A:
Q: H :0 (b) Determine the type of test statistic to use. (Choose one) (c) Ft e test statistic. (Round…
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A: The given correlation coefficient is 0.868.
Q: Find the margin of error for the given values of c, o, and n. c= 0.95, o = 2.1, n= 64 Click the icon…
A: Given that, c = 0.95σ = 2.1n = 64
Q: Find the margin of error for the given values of c, o, and n. c= 0.95, o = 3.8, n=49 Click the icon…
A: We have given that, Confidence level (c) = 0.95 or 95% and population standard deviation (σ) = 3.8…
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Q: Find the critical value zα for α=0.07 Round to 2 decimal places.
A: We have to find the critical value zα for α=0.07.
Q: Find the margin of error for the given values of c, o, and n. c= 0.90, o = 2.7, n= 36 Click the icon…
A: We have to find margin of error.
Q: Draw the Chi Square Curve and put in the critical value (p = 0.05)
A: Given: Test statistic = 3.4260 Number of categories (c) = 6 α=0.050
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- For a special pre-New Year's Eve show, a radio station personality has invited a small panel of prominent local citizens to help demonstrate to listeners the adverse effect of alcohol on reaction time, thus drinking an alcohol increases reaction time. The reaction times (in seconds) before and after consuming four drinks are in Sheet 11. Test a hypothesis to see if the showman claim is supported by the given data (use alpha=0.01 significance level). Sheet 11 Subject Before After 1 0,32 0,39 2 0,39 0,44 3 0,36 0,49 4 0,41 0,53 5 0,37 0,46 6 0,35 0,39 7 0,37 0,49 8 0,37 0,52 9 0,32 0,43 10 0,39 0,45 11 0,39 0,39 12 0,41 0,49 13 0,32 0,48 14 0,38 0,48 15 0,34 0,4 16 0,35 0,52 Select one: a. The alternative hypothesis that the reaction time before consuming alcohol is less than after is not accepted as the p-value= 0.0000 is less than alpha=0.005 b. The Null hypothesis that the reaction time before consuming alcohol is less than after is rejected…Also, using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2009 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2009 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?Assume that you have a sample of n1=8, with the sample mean X1=44, and a sample standard deviation of S1=5, and you have an independent sample of n2=14 from another population with a sample mean of X2=30 and the sample standard deviation S2=6. Using a significance level of α=0.025, what is the critical value for a one-tail test of the hypothesis H0: μ1≤ μ2 against the alternative H1: μ1>μ2? The critical value is ______ (Round to two decimal places as needed.)
- A nationwide study of undergraduate students reported that the mean number of drinks consumed per week during the spring semester is 7.96. The mean number of drinks consumed per week at USC is 7.64 (s.d.=2.55, N=412 Health services is concerned that USC students are consuming significantly more alcohol per week than the national average. Using an alpha level of .05, Is there sufficient evidence to be concerned? Be sure to select the correct critical value for the alternative hypothesis, and then use this evidence to make your conclusionAt a water bottling facility, a technician is testing a bottle filling machine that is supposed to deliver 500 ml of water, and in the past the standard deviation of the population of bottles has be 7.5 ml. The technician dispenses 39 samples of water and determines the volumes have a mean of 498.3 ml. The technician wants to perform a hypothesis test at (alpha) = 0.05 level to determine whether the machine is not dispensing 500 ml, and is thus out of calibration. Hypothesis Statement: Test Value(s): So, we ____ the null hypothesis because ______. There ______ enough evidence to support the claim that the machine mean volume differs from 500 ml and is out of calibration.An electrical engineer wishes to determine if, among two specific municipal buildings in town, Building “North” and Building “South”, whether the tensile strength of pipes (in psi) is not the same in each of these two buildings. A sample of pipes was chosen at random from both Building “North” and Building “South”, respectively. Using α = 0.05, which of the following statistical test, or parameter, would be best for determining whether tensile strength of pipes (in psi) is not the same in each of these two buildings? (Assume all statistical assumptions met.) a) Binomial Distribution b) Population Difference in Means (i.e., Unpaired Data) c) The Chi-Squared Test of Independence d) Population Mean Difference (i.e., Paired Data)
- In a hypothesis test with hypotheses H0 :pless than or greater than 0.58 and H1 >0.58 , a random sample of size 1,165 produced a sample proportion of 0.6160. The test is to be made at the 2.5% significance level. What is the value of the test statistic, z, rounded to three decimal places?In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equal-size towels were used, with four sections of towels tested per brand. The absorbency rating data follow. Brand x y z 91 100 82 100 96 89 89 95 89 88 93 80 #1) At a 0.05 level of significance, does there appear to be a difference in the ability of the brands to absorb water? State the null and alternative hypotheses: A) H0: ?x ≠ ?y ≠ ?zHa: ?x = ?y = ?z B) H0: ?x = ?y = ?zHa: ?x ≠ ?y ≠ ?z C) H0: At least two of the population means are equal.Ha: At least two of the population means are different. D) H0: ?x = ?y = ?zHa: Not all the population means are equal. E) H0: Not all the population means are equal.Ha: ?x = ?y = ?z #2) Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = #3) State your conclusion. A) Reject H0. There is…In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equal-size towels were used, with four sections of towels tested per brand. The absorbency rating data follow. Brand x y z 91 100 82 100 96 89 89 95 89 88 93 80 #1) At a 0.05 level of significance, does there appear to be a difference in the ability of the brands to absorb water? State the null and alternative hypotheses: A) H0: ?x ≠ ?y ≠ ?zHa: ?x = ?y = ?z B) H0: ?x = ?y = ?zHa: ?x ≠ ?y ≠ ?z C) H0: At least two of the population means are equal.Ha: At least two of the population means are different. D) H0: ?x = ?y = ?zHa: Not all the population means are equal. E) H0: Not all the population means are equal.Ha: ?x = ?y = ?z #2) Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = #3) State your conclusion. A) Reject H0. There is…
- there is 0.01 and 0.05 alpha level, what is the critical cutoff z scores for both? which one is easier to reject the null hypothesis and why?From a sample of 14 observations, an analyst calculates a t-statistic to test a hypothesis that the population mean is equal to zero. If the analyst chooses a 5% significance level, the appropriate critical value is: A. less than 1.80. B. greater than 2.16. C. between 1.80 and 2.16.(1) Conduct a hypothesis test, at the 5% level of significance, to determine whether ? is significant (2) What would be the growth of the plant if 4g of fertilizer and 7g of ater was given to it daily? (3) Carry out an F -test at the 1% significance level to determine whether the model is significant