n = 49 H0: μ = 50 x̄ = 54.8 Ha: μ ≠ 50 σ = 28 If the test is done at a 5% level of significance, the null hypothesis should _____. a. not be rejected b. be rejected c. Not enough information is given to answer this question. d. None of these answers are correct..
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n = 49 H0: μ = 50
x̄ = 54.8 Ha: μ ≠ 50
σ = 28
If the test is done at a 5% level of significance, the null hypothesis should _____.
a. not be rejected
b. be rejected
c. Not enough information is given to answer this question.
d. None of these answers are correct..
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- A can of soda is labeled as containing 16 fluid ounces. The quality control manager wants to verify that the filling machine is not over-filling the cans. Complete parts (a) through (d) below. (a) Determine the null and alternative hypotheses that would be used to determine if the filling machine is calibrated correctly. H0: ▼ sigmaσ muμ pp ▼ nothing H1: ▼ pp muμ sigmaσ ▼ less than< equals= not equals≠ greater than> nothingI want to assess whether different types of movies increase viewers’ stress response. I recruit 24 individuals and randomly assign them into three groups: Frozen (a Disney kids movie), Nightmare on Elm Street (a horror movie), and Fast & Furious (an action movie). After each participant watches their assigned movie, I measure their heart rate. Test, at an alpha of 0.05, whether the type of movie affects heart rate. null hypothesis: H0: μ1 Frozen= μ2 nightmare=μ3 fast & furious alternative hypothesis: Not all the means are equal c. What is the between-groups degrees of freedom (df)? d. What is the within-groups degrees of freedom (df)? E. What is the total degrees of freedom (df)?Using the Laplace Principle of Indifference to know the uncertainty, solve the following; In a tour to outside, we have 40 times food trip, 25 times clothing and 15 times grocery visits to a same place. If we extract to plan a random visit, what is the probability of having A food trip only? A clothing with half the chance of food but not grocery? A grocery with no food and clothing?
- Q1. An anthropologist wants to collect data to determine whether the two different cultural groups that occupy an isolated Pacific Island grow to be different heights. The results of his samples of the heights of adult females are as follows Do these samples constitute enough evidence to reject the null hypothesis that the heights of the two groups the same? Set alpha to .05.A teacher wants to know if her students spend more money on their lunches than the national average (μ = $2.48). Her 20 students spend an average of $3.50 (Ŝ = 1.20). Assuming an alpha of .05, do her students spend significantly more on lunch than the national average? Group of answer choices Yes NoIndependent samples from two populations are taken, and a t-statistic is used to test the null hypothesis Ho: u1 = u2 against the alternative Ha: u1>u2. The resulting p-value is 0.04.Using the same samples but change the alternative hypothesis to u1 is NOT EQUAL TO u2. What is the new p-value? a) 0.04 b) 0.08 c) 0.05 d) 0.02 e) cannot be determined
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- Using the information provided in the SPSS output. 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 hypothesisA researcher conducts a hypothesis test using a sample of n = 20 with M = 34 and s 2 = 36 from an unknown population. What is the df value for the t statistic?A researcher conducts a hypothesis test using a sample of n=20 with M =34 and s^2=36 from an unknown population.What is the df value for the t statistic?