It has recently been claimed that 20% of all engaged couples choose to elope. A wedding planher isskeptical of this claim and believes the percentage is too low. She decides to gather data in order toconduct a hypothesis test, and she writes her alternative hypothesis as "p = 0.20." What is wrong with this?O The alternative hypothesis should have a ">" sign rather than the "=" sign.O Nothing is wrong.O We cannot determine what might be wrong without knowing what the null hypothesis is.O The wrong symbol is being used in the alternative hypothesis; p-hat should be used instead of p.O The alternative hypothesis should have a "<" sign rather than the "=" sign.

Ho and Ha be the null and alternative hypothesis

Answered: claimed that 20% of all engaged couples…

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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State the null and alternative hypothesis for 24 and 26
A sales manager believes that the mean number of days per year her company's sales representatives spend traveling is less than 50. A test is made of ?0 ? = 7 ?????? ?1 ? < 50. The null hypothesis is not rejected. State an appropriate conclusion.
A news article that you read stated that 51% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 122 of the 248 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? ✓ Select an answer H₁: ? Select an answer (please enter a decimal) (Please enter a decimal) c. The test statistic ? d. The p-value = e. The p-value is ? ✓ a f. Based on this, we should Select an answer the null hypothesis. (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.)
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Suppase there is a claim that a certaln population has a mean, u, that is less than 9. You want to test this clalm. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.05 level of significance. To start this test, you write the null hypothesis, Hy and the alternative hypothesis, H, as follows. Ho p29 Suppose you also know the following information. The value of the test statistic based on the sample is -1.995 (rounded to 3 decimal places). The p-value is 0.023 (rounded to 3 dedmal places). (a) Complete the steps below for this hypothesis test. O One-tailed o Two-tailed Step 2: Enter the test statistic. (Round to 3 decimal places.) Step 3: Shade the area represented by the p- value. Step 4: Enter the p- value. (Round to 3 decimal places.) (b) Based on your answer to part (a), which statement below is true? Since the p-value is less than (or equal to) the level of significance, the null hypothesis is rejected. Since the p-value is less…
2. The steps of hypothesis testing You intend to draw a random sample in order to test a hypothesis about an unknown population mean. You will use a hypothesis test. A description of each of the steps of a hypothesis test follows, but they may be specified in the incorrect order. Specify the correct order of the steps. Determine the null and alternative hypotheses. Select a level of significance. Make a decision about the unknown population. Select a sample and compute the z-score for the sample mean.
The mean price of mid-sized cars in a region is $57,600. A test is conducted to see if the claim is true. Identify the null hypothesis. ? v? v Identify the alternative hypothesis. ? v:?v| ? v Identify the type I error. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is not $57,600. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is nor $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is $57,600. Identify the type II error. O You decide that the mean price of mid-sized cars is not $57,600, when the mean price of mid- sized cars actually is $57,600. O You decide that the mean price of mid-sized cars is $57,600, when the mean price of mid- sized cars actually is not…
Need ASAP. Tyia:) 46. The following describes an alternative hypothesis except?A. It contradicts the null hypothesis.B. It is accepted once the null hypothesis is rejected.C. It states a specific difference between the variables.D. It states that the difference between two variables is not significant.47. Using 0.05 level of significance in testing hypothesis, what is the probability of accepting to commit an error in rejecting the null hypothesis? A. 1%B. 5%C. 95%D. 99% 48. What does level of significance mean in hypothesis testing?A. probability of calculating the hypothesized meanB. probability of not calculating the hypothesized meanC. probability of rejecting the null hypothesis when it is trueD. probability of not rejecting the null hypothesis when it is false

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