The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed and the parameter that is being tested. H0: μ = 9.0 H1: μ ≠ 9.0
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The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed and the parameter that is being tested.
H0: μ = 9.0
H1: μ ≠ 9.0
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- O1h 29m Remaining 8.MCTQ Section Exercise 1 A hypothesis test is to be performed. Determine the null and alternate hypotheses. dlo In 1991, the average duration of long-distance telephone calls originating in one town was 6.9 minutes. A long-distance telephone company wants to perform a hypothesis test to determine whether the average duration of long-distance phone calls has changed from the 1991 mean of 6.9 minutes. Ho:u = 6.9minutes Hu 6.9minutes Ho:µ=6.9minutes H:u + 6.9minutes Ho:µ +6.9minutes H:µ=6.9minutes Submit Assignment O 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use Privacy S6 5/2 nere to search hp deleteState whether the standardized test statistict indicates that you should reject the null hypothesis. Explain. (a) t=2.242 (b) t= 0 (c) t=2.195 (d) t= -2.254 0. (a) For t 2.242, should you reject or fail to reject the null hypothesis? O A. Reject Ho, because t> 2.219. O B. Reject Ho, because t 2.219. O D. Fail to reject Ho, because t<2.219.Fertilizer: A new type of fertilizer is being tested on a plot of land in an orange grove, to see whether it increases the amount of fruit produced. The mean number of pounds of fruit on this plot of land with the old fertilizer was 391 pounds. Agriculture scientists believe that the new fertilizer may increase the yield. State the appropriate null and alternate hypotheses. The null hypothesis is Ho:μ (choose one) and Answers The alternate hypothesis is H1:μ (choose one) and Answers
- Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. H0: p=0.4 versus H1: p>0.4 n=125; x=55, α=0.1You may need to use the appropriate technology to answer this question. Consider the data. xi 1 2 3 4 5 yi 4 7 5 10 14 Use the t test to test the following hypotheses (? = 0.05): H0: β1 = 0 Ha: β1 ≠ 0 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Use the F test to test the hypotheses in part (d) at a 0.05 level of significance. Present the results in the analysis of variance table format. Set up the ANOVA table. (Round your values for MSE and F to two decimal places, and your p-value to three decimal places.) Sourceof Variation Sumof Squares Degreesof Freedom MeanSquare F p-value Regression Error Total 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 =P-value is -.055 You are asked to make a decision about whether to reject the null hypothesis that the population value of gamma equals 0 (i.e., that there is no ordinary association in the population between frequency of prayer and health). If alpha = 0.05 and you use a non-directional alternative hypothesis, which of the following is true?) A. Since the p-value is larger than alpha, you do not reject the null hypothesis B. Since the p-value is less than alpha, you do not reject the null hypothesis C. Since the p-value is larger than alpha, you reject the null hypothesis. D. Since the p-value is less than alpha, you reject the null hypothesis
- Please use the data to find the hypothesis testYou're fired! ~ Suppose that in a random sample of 252 employed Americans, there are 38 individuals who say that they would fire their boss if they could. Round all calculated values in this problem to 4 decimal places. 1. The value 38/252 = 0.1508 is a Statistic We want to use the information from the sample to conduct a hypothesis test to determine if fewer than 19% of employed Americans would fire their boss if they could. 2. Choose the null and alternative hypotheses for this test. Use appropriate notation. ОА. Но : р %3D 0.19, На : р 0.19 A 3. If you assume that the observations in the sample are independent, what is the smallest value the sample size could be to meet the conditions for this hypothesis test? А. 38 В. 10 С. 20 D. 67 ОЕ. 53 OF. None of the aboveA study by researchers at a university addressed the question of whether the mean body temperature of an animal is 98.2°F.Among other data, the researchers obtained the body temperatures of 97 healthy animals. Suppose you want to use those data to decide whether the mean body temperature of healthy animals is greater than 98.2°F. Complete parts (a) through (c) below. a. Determine the null hypothesis. H0: μ ______ (=, >, < or ≠) ________ ________________ (healthy animals or °F) (Type an integer or a decimal. Do not round.) b. Determine the alternative hypothesis. Ha: μ (=, >, < or ≠) ________ ________________ (healthy animals or °F) (Type an integer or a decimal. Do not round.) c. Classify the hypothesis test as two tailed, left tailed, or right tailed. The hypothesis test is _______________ (right tailed, left tailed or two tailed)
