State the appropriate null and alternate hypotheses.
Q: A data set includes weights (in grams) of 33 Reese's Peanut Butter Cup Miniatures. The accompanying…
A: Step 1:
Q: A data set includes weights (in grams) of 37 Reese's Peanut Butter Cup Miniatures. The accompanying…
A: claim : μ = 8.953n = 37α = 0.05we have to identify correct hypothesis.
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Q: tures. The accompanying Statdisk displ Using all 35 weights to test the claim that the sample is…
A: Sample size n =35 Population mean =8.953
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A: Given that : A magazine reported that at the top 50 business schools in a region, students studied…
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Q: Suppose 250 subjects are treated with a drug that is used to treat pain and 50 of them developed…
A: given data, normal distribution n=250x=50p^=xn =50250 =0.20claim:p>0.20
Big fish: A sample of
flounder of a certain species have sample
grams. Scientists want to perform a hypothesis test to determine how strong the evidence is that the mean weight is less than
grams. State the appropriate null and alternate hypotheses.
Sample of size n=250 and sample mean of weight X̄ = 50.5 gram
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- A hospital director believes that 46% of the lab reports contain errors. A sample of 250 tubes found 95 errors. Is there sufficient evidence at the 0.05 level to refute the hospital director's claim? State the null and alternative hypotheses for the above scenario.A study suggests that the 48% of 25 year olds have gotten married. You believe that this is incorrect and decide to collect your own sample for a hypothesis test. From a random sample of 321 25 year olds, you find that 143 of them are married. Test the claim that proportion of 25 year olds have gotten married is different than what was reported. Use a 5% significance level. Give answer to at least 4 decimal places. What are the correct hypotheses? (Select the correct symbols and use decimal values not percentages.) Ho: Select an answer ✓ H₁: Select an answer ✓ ? v Based on the hypotheses, compute the following: Test Statistic = ? v p-value = Based on the above we choose to Select an answer The correct summary would be: Select an answer year olds have gotten married is different than what was reported value of 48%. ✓that the proportion of 25The Gallup Poll asked 1015 U.S. adults whether they believed that people should pay sales tax on items purchased over the internet. Of these, 477 said they supported such a tax. Does the survey provide convincing evidence that less than 42% of U.S. adults favor an internet sales tax? Use the 0.05 level of significance. 1. STATE THE NULL AND ALTERNATIVE HYPOTHESIS: 2. T STATISTIC/ P VALUE 3.REJECT OR FAIL THE NULL HYPOTHESIS 4. IS THE CLAIM SUPPORTED AT THE 0.05 LEVEL OF SIGNIFICANCE?
- The city manager measures response times by looking at the proportion of calls for which paramedics arrived within 8 minutes. Last year, paramedics arrived on scene 75% of the time within 8 minutes. The city manager wants to determine whether they have done significantly better this year. State appropriate null and alternative hypotheses for the city manager to test. Describe a Type I and Type II error in this setting. Explain the consequences of each type of error. Which is more serious: a Type I error or a Type II error? Justify your answerSuppose a hypothesis test was performed with a level of significance of 0.05. Then if the null hypothesis is actually true, then there is a 5% chance that the researcher will end up rejecting the null hypothesis in error. True FalsePast studies have indicated that the percentage of smokers was estimated to be about 32%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1836 people and found that 552 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced.a) Identify the null and alternative hypotheses?H0H0: H1H1: 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.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…
- Past studies have indicated that the percentage of smokers was estimated to be about 34%. Given the new smoking cessation programs that have been implemented, you now believe that the percentage of smokers has reduced. You randomly surveyed 1708 people and found that 544 smoke. Use a 0.05 significance level to test the claim that the percentage of smokers has reduced.a) Identify the null and alternative hypotheses?H0H0: H1H1: 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.d) Calculate your test statistic (Use ˆpp^ rounded to 4 decimal places). Write the result below, and round your test statistic to 4 decimal places.e) Calculate your p-value. Write the result below, rounded 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…The average weight of a cuckoo bird is less than 1.6 pounds. what are the null and alternative hypothesisState the appropriate conclusion for the hypothesis test. Use the p-value toindicate how significant the sample data are.A. Claim: More than 2 out of 3 dentists choose Zest. p-Value = 0.045. Significancelevel, " = 0.05.B. It is not true that the average age of the top 200 tennis players is equal to 25. p-Value= 0.063. Significance level, " = 0.05.C. The tires on new cars last less, on average, than 40,000 miles. p-Value = 0.015.Significance level, " = 0.01
- Only 15% of registered voters voted in the last election. Will voter participation increase for the upcoming election? Of the 347 randomly selected registered voters surveyed, 56 of them will vote in the upcoming election. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: Họ: ? Select an answer (please enter a decimal) H.: ?vSelect an answer v (Please enter a decimal) c. The test statistic ?v (please show your answer to 4 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is v f. Based on this, we should fail to reject g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly higher than 15% at a = 0.01, so there is statistically significant evidence to conclude that the percentage of registered voters who will vote in the upcoming election will be equal to 15%. a…What is the null and alternative hypotheses for the average weight of dogs is 15.6 pounds?Using traditional methods it takes 101 hours to receive an advanced driving license. A new training technique using Computer Aided Instruction (CAI) has been proposed. A researcher believes the new technique may lengthen training time and decides to perform a hypothesis test. After performing the test on 170 students, the researcher fails to reject the null hypothesis at a 0.10 level of significance. What is the conclusion?
