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StatisticsQ&A Library5. Determine the value needed to reject the null hypothesis. Remember to calculate thecorrect degrees of freedom before finding the critical t-value! Note whether it is best touse the one-tailed or two-tailed test.6. Compare the obtained and critical value7.Decide whether you will retain the null hypothesis or ...Decide whether you will reject the null hypothesis8.Finally, write up your results as you would see it in a results section of an empirical9.groupresearchMake sure to include the means and SDs for smashed into and hitрaper.(in miles). I do NOT need to see the effect size (Cohen's D)10. Was your obtained t-value positive or negative? Would it matter either way? With yourdiscussiontell my why a positive or negative value is not important when it comesgroup,obtained valueto your11. What is more appropriate to use for your data set: the one-tailed t-Test or the two-tailed t-Test. Why?12. Why would it be easier to find significance using a p value of .05 than a p value of .01?MODEDEL SY 3211 - Research Methods and Design I - Group Assignment #11 - How Fast?Instructions: In 1974, Loftus and Palmer conducted a classic study demonstrating how thelanguage used to ask a question can influence eyewitness memory. In the study, college studentswatched a film of an automobile accident and then were asked questions about what they saw.One group was asked, "About how fast were the cars going when they smashed into each other?"Another group was asked the same question except the verb was changed to "hit" instead ofsmashed into." The "smashed into" group reported significantly higher estimates of speed thanthe "hit group. You, as a researcher wonder if Loftus and Palmer's study is reliable, andthis study with a sample of FIU students and obtains the following data.repeatsHit GroupSmashed Into Group28462241365132363841393733463137353252255522502741223925473245263236413546393740Your job is to determine if smashed into group reports higher speed than hit group. As you workon this problem, make sure to provide information for each of the eight steps we cover inChapter 11 (Salkind) as well as the APA write-up you would see in a results section.1l and alternative hypothesesQuestion

Asked Nov 13, 2019

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Step 1

Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If you want remaining sub-parts to be solved, then please resubmit the whole question and specify those sub-parts you want us to solve.

From the provided information, the hypothesis can be constructed as;

Null hypothesis; there is no significance difference between estimation of speed, *H*_{0}:*µ*_{1}=* µ*_{2}

Alternative hypothesis; the “smashed into” group report higher estimates of speed than the “hit” group.

*H*_{0}:*µ*_{1}<* µ*_{2}

Here *µ*_{1} and *µ*_{2} are the population mean of hit group and smashed into group respectively.

The sample size of hit group (*n*_{1}) = 20

Consider *x*_{1} be a random variable which represents the hit speed.

The mean and standard deviation for hit group can be obtained as:

Step 2

Similarly, the sample size of hit group (*n*_{2}) = 20

Consider *x*_{2} be a random variable which represents the smashed into speed.

The mean and standard deviation for smashed into group can be obtained as:

Step 3

5) The value of the test st...

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