The average American consumes 97 liters of alcohol per year. Does the average college student consume adifferent amount of alcohol per year? A researcher surveyed 12 randomly selected college students andfound that they averaged 79.1 liters of alcohol consumed per year with a standard deviation of 19 liters.What can be concluded at the the a = 0.05 level of significance?a. For this study, we should use Select an answerb. The null and alternative hypotheses would be:Ho: ? Select an answerH₁: ? Select an answer ✓c. The test statistic ? v =(please show your answer to 3 decimal places.)(Please show your answer to 4 decimal places.)d. The p-value =

(a) Determine the type of study used. The type of study used is determined below as follows:…

Answered: The average American consumes 97 liters…

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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Use the following data to answer the questions. Nowhere Bay Hellhole Bay n1 = 20 n2 = 20 = 958.2 individuals = 894.1 individuals s1 = 69.4 individuals s2 = 149.8 individuals Determine the population parameter(s) being tested using standard notation. Specify the null and alternative hypotheses . Calculate the test statistic's observed value (please include all calculations). Specify the distribution to be used in order to calculate the P-value, and you must do so with table accuracy.
The mean number of eggs per person eaten in the United States is 266. Do college students eat a different number of eggs than the average American? The 63 college students surveyed averaged 258 eggs per person and their standard deviation was 89.6. What can be concluded at the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? V Select an answer ▼ H1: ? Select an answer c. The test statistic | ? (please show your answer to 3 decimal places.) ▼ d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is (? f. Based on this, we should | Select an answer the null hypothesis. g. Thus, the final conclusion is that The data suggest that the populaton mean is significantly different from 266 at a = 0.10, so there is statistically significant evidence to conclude that the population mean number of eggs consumed by college students per year is different from 266. The data suggest that the…
It is commonly believed that the mean body temperature of a healthy adult is 98.6° F. You are not entirely convinced. You believe that it is not 98.6° F. You collected data using 44 healthy people and found that they had a mean body temperature of 98.19° F with a standard deviation of 1.17° F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6° F. a) Identify the null and alternative hypotheses? Ho:[? v b) What type of hypothesis test should you conduct (left , right , or two-talled)? O left-tailed Oright talled O two tailed c) Identify the appropriate significance level. d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places. e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places. null hvoothosis? esc 000 000 F1 F2 F3 F4 F5 F6 @ # $ % 1 2 3 4 5 6 品
An electrician wants to know whether batteries made by two manufacturers have significantly different voltages. The voltage of 58 batteries from each manufacturer were measured. The population standard deviations of the voltage for each manufacturer are known. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Population standard deviation(millivolts) A 186 2 B 185 3 What type of hypothesis test should be performed? What is the test statistic? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.1 significance level?yes or no
It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F. You collected data using 44 healthy people and found that they had a mean body temperature of 98.28∘F with a standard deviation of 0.93∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F. c) Identify the appropriate significance level.d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.
The average salary in this city is $44,700. Is the average less for single people? 47 randomly selected single people who were surveyed had an average salary of $41,310 and a standard deviation of $12,120. What can be concluded at the = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: ? ◇ Select an answer ? ◇ Select an answer c. The test statistic? = (please show (Please show your answer your answer to 3 decimal places.) d. The p-value = to 4 decimal places.) e. The p-value is ? ✨ a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest that the sample mean is not significantly less than 44,700 at a = 0.05, so there is statistically insignificant evidence to conclude that the sample mean salary for singles is less than 41,310. The data suggest that the populaton mean is significantly less than 44,700 at a = 0.05, so there is statistically…
The mean number of eggs per person eaten in the United States is 244. Do college students eat a different number of eggs than the average American? The 60 college students surveyed averaged 255 eggs per person and their standard deviation was 64.4. What can be concluded at the a = 0.10 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? v Select an answer v Н: Select an answer V c. The test statistic ? v = (please show your answer to 3 decimal places.) d. The p-value (Please show your answer to 4 decimal places.) e. The p-value is ? va f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... the null hypothesis. O The data suggest that the populaton mean is significantly different from 244 at a = 0.10, so there is statistically significant evidence to conclude that the population mean number of eggs consumed by college students per year is different from 244. O The data suggest…
It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F. You collected data using 49 healthy people and found that they had a mean body temperature of 98.24∘F with a standard deviation of 1.05∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F.a) Identify the null and alternative hypotheses? H0: H1: d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.f) Do you reject the null hypothesis? We reject the null hypothesis, since the p-value is less than the significance level. We reject the null hypothesis, since the p-value is not less than the significance level. We fail to reject the null hypothesis, since the p-value is less than the significance…
It is commonly believed that the mean body temperature of a healthy adult is 98.6∘F. You are not entirely convinced. You believe that it is not 98.6∘F. You collected data using 41 healthy people and found that they had a mean body temperature of 98.27∘F with a standard deviation of 0.97∘F. Use a 0.05 significance level to test the claim that the mean body temperature of a healthy adult is not 98.6∘F.a) Identify the null and alternative hypotheses? H0: H1: b) What type of hypothesis test should you conduct (left-, right-, or two-tailed)? left-tailed right-tailed two-tailed c) Identify the appropriate significance level as a decimal.d) Calculate your test statistic. Write the result below, and be sure to round your final answer to two decimal places.e) Calculate your p-value. Write the result below, and be sure to round your final answer to four decimal places.f) Do you reject the null hypothesis? We reject the null hypothesis, since the p-value is less than the significance level.…
Write your answers for this question on paper and then upload: From sampling 40 taxicab rides in New York City, a survey found that the mean cost of the taxi fare from the sample was $12.04. If the population standard deviation is $8.36, test the claim that the mean cost of a taxicab ride in New York City is less than $15.00. (a) State the null and alternative hypothesis. (b) By hand, find the test statistic z-score. Round to two decimal places. (c) Sketch the sampling distribution labeling the test statistic found in part (b) and compare it to the critical value z-score found in the previous question to make a decision to either reject or fail to reject the null hypothesis. Upload Choose a File
You may need to use the appropriate technology to answer this question. Which is cheaper: eating out or dining in? The mean cost of a flank steak, broccoli, and rice bought at the grocery store is $13.04.† A sample of 100 neighborhood restaurants showed a mean price of $12.73 and a standard deviation of $2 for a comparable restaurant meal. (a) Develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than fixing a comparable meal at home. H0: μ ≤ 13.04 Ha: μ > 13.04 H0: μ > 13.04 Ha: μ ≤ 13.04 H0: μ ≥ 13.04 Ha: μ < 13.04 H0: μ = 13.04 Ha: μ ≠ 13.04 H0: μ < 13.04 Ha: μ ≥ 13.04 (b) Using the sample from the 100 restaurants, what is the test statistic? Using the sample from the 100 restaurants, what is the p-value? (Round your answer to four decimal places.) p-value = (c) At α = 0.05, what is your conclusion? Do not reject H0. We can conclude that the cost of a…
Explain how each of the following influences the value of the z-score in a hypothesis test a. increasing the difference between the sample mean and the original population mean b. increasing the population standard deviation c. increasing the number of scores in the sample

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