"Trydint" bubble-gum company claims that 7 out of 10 people prefer their gum to "Eklypse". Test their claimat the 99 confidence level.The null and alternative hypothesis in symbols would be:Ho: p = 0.7H₁: p = 0.7OTΟ Ho : μ < 0.7H : μ > 0.7Ο Ηo : μ = 0.7H₁:μ 0.7Ho: p≥ 0.7H₁: p < 0.7Ho: p ≤ 0.7H₁: p > 0.7Ο Ho : μ 2 0.7H : μ < 0.7The null hypothesis in words would be:The proportion of all people that prefer Trydint gum is 0.7O The proportion of people in a sample that prefers Trydint gum is 0.7.O The proportion of people in a sample that prefer Trydint gum is not 0.7O The average of people that prefer Trydint gum is not 0.7.The average of people that prefer Trydint gum is 0.7.O The proportion of all people that prefer Trydint gum is greater than 0.7.O The proportion of all people that prefer Trydint gum is less than 0.7.Based on a sample of 130 people, 77 said they prefer "Trydint" gum to "Eklypse".The point estimate is:(to 3 decimals)The 99 % confidence interval is: 0.480Based on this we:Fail to reject the null hypothesisReject the null hypothesisO to(to 3 decimals)

Sample size n =130 Favorable cases x =77

Answered: the 99 confidence level. e null and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Which of the following is NOT true about P-values in hypothesis testing? ..... Choose the correct answer below. A. If the P is low, the null must go. B. The P-value separates the critical region from the values that do not lead to rejection of the null hypothesis. C. If the P is high, the null will fly. O D. The P-value is an area.
b) A manufacturer claims that the average thickness of their chewing gum is 20mm. A quality control engineer wishes to check this claim and measures the average thickness of a sample of 10 pieces of gum, finding x = 18.6mm and s = 4mm. Does the sample seem to indicate that the average thickness of their chewing gum is not 20mm? Use a 0.05 level of significance. Circle the correct null and alternative hypotheses. i) H : μ = 20 : Нo μ = 20 Η : μ 20 ii) What is the probability of making a Type I error? iii) Which test statistic will you use? Circle your answer. Ꮓ T iv) x² Calculate the value of the test statistic for the quality control engineer's sample. v) Determine the critical value of the test statistic. Do not round or truncate. vi) Determine the P-value. vii) What is the conclusion? Accept Ho Reject Ho Fail to reject Ho Circle your response. viii) Does the sample seem to indicate that the average thickness of their chewing gum is not 20mm? Circle your response. YES NO
1. Identify the parameter and set up null and alternative hypotheses. A drug company says their brand of over the counter pain medicine contains on average 1.25 grams of acetaminophen in each tablet. A consumer wants to find evidence against the drug company's claim. 1. Identify the parameter: 2. Null hypothesis: 3. Alternative Hypothesis: а. b. Social scientists suspects the median age of women at the birth of the first child is more than 25 years. 1. Identify the parameter: 2. Null hypothesis 3. Alernative Hypothesis: c. A consumer advocacy group wants to prove there is no difference between regular unleaded and premium unleaded average gas mileage. 1. Identify the parameter: 2.Null hypothesis: 3.Alternative Hypothesis:
1. The incidence of cancer among phosphate mine workers and their exposure to radiation was investigated. Cancer incidence was recorded among 60 phosphate mine workers who had 0-29 working level months (WLM) of exposure, 60 phosphate mine workers who had 30-89 WLM of exposure, and 60 phosphate mine workers who had 90-120 WLM of exposure. The number of cancer incidences for each group are presented in Table 1. Table 1: Two-way Table of Counts Cancer Incidence Exposure Level Yes No Total 0-29 WLM 20 40 60 30-89 WLM 33 27 60 90-120 WLM 43 17 60 Total 96 84 180 Perform a x? test, at the 5% level of significance, whether cancer incidence rates differ between the three levels of radiation among phosphate mine workers.
Answer the following
14) part B
Given the following null and alternative hypotheses, conduct a hypothesis test using an alpha equal to 0.05. (Note: The population standard deviations are assumed to be known.) H0: µ1 ≤ µ2 HA: µ1 > µ2 The sample means for the two populations are shown as follows: sample mean 1 = 144, sample mean 2 = 129 population standard deviation 1 = 11, population standard deviation 2 = 16 sample size 1 = 40, sample size 2 = 50 Answer: Decision Rule : Reject H0 if Zcal > citical value Z = Test statistic: (Z calculated) Zcal = (use 4 decimal places)Conclusion: H0.
Let n₁ = 50, X₁ = 40, n₂ = 50, and X₂ = 20. Complete parts (a) and (b) below. a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions? Determine the null and alternative hypotheses. Choose the correct answer below. OA. Ho: ₁2π₂ H₁: π₁ π₂ C. Ho: π₁ #1₂ H1: П1 =П2 Calculate the test statistic, ZSTAT, based on the difference P₁ - P2. The test statistic, ZSTAT, is (Type an integer or a decimal. Round to two decimal places as needed.) Calculate the p-value. O D. Ho: ₁ = π₂ H₁: π₁ #π₂ 퍼 The p-value is. (Type an integer or a decimal. Round to three decimal places as needed.)
The null and alternative hypotheses are given. Determine whether the hypothesis test is left-tailed, right-tailed, or two-tailed. What parameter is being tested? Ho: O = 4 H: What type of test is being conducted in this problem? Two-tailed test Left-tailed test O Right-tailed test What parameter is being tested? Population proportion Population standard deviation Population mean O Time Remaining: 01:50:59 Next DEC tv MacBook Pro Search or type URL
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in Practice 9.1 (page 4 of 7) in Course: INNOVATE English in INNOVATE Physical Educati x VituaIsC Moodle an Practice 8.2 (page 4 of 6) Ask a Question | bartleby + A scde-genius.mrooms.net/mod/quiz/attempt.php?attempt=7539876&cmid=945424&page=3 G in cc in 6.12 Unit 6 Benchm. O New Tab VSC Akira Frazier Home / My courses / İNNOVATE Geometry CP 2020-21 (Khaleelah Stroman) / Unit 8: Right Triangles and Trigonometry / Practice 8.2 Quiz navigation Question 7 Tries remaining: Find the Missing Side Lengths Vocabulary 3 Points out of 1.00 Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form. P Flag Find the Missing Sides question 3 4 | 5 || 6 9 10 11 12 60° 30 Finish attempt ... m = n = Check VI 1:37
QUESTION 4 Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol (u. p. a) for the indicated parameter. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p. is less than 2 in every one thousand. Ho:p> 0.002 H₁; p ≤ 0.002 Ho: p 0.002 Ho: P = 0.002 Hj: p < 0.002

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