Help me find the sample size of a population of 500 using yamani formular

A researcher investigated the effect of different volumes of background noise on participants’ accuracy rates while performing a difficult task. He tested three groups (n = 11) and obtained thefollowing means: for low volume, X̅ = 66.5; for medium, X̅ = 61.5; for loud, X̅ = 48.25. He computed the following sums of squares: Source Sum of Squares df  Mean Square F Between 452.16       Within 522.75       Total 974.91         Complete the ANOVA summary table. What are H0 and Ha? What is Fcrit? What do you conclude about Fobt? Perform the Tukey HSD test if appropriate. What do you conclude about this relationship? What is the effect size in this study, and what does this tell you about this factor?

Consider random samples of size 44 drawn from population A with proportion 0.32 and random samples of size 30 drawn from population B with proportion 0.25.

The average worker at a local brake manufacturer produces 10 brakes per day (other statistical information was not known).  An industrial psychologist was hired to increase worker productivity and a new assembly method was designed and tested in a sample of workers. Identify the appropriate test.   Select one: a. independent samples t test b. z test c. single sample t test d. paired samples t test

the value used in the equation for the t-test for independent means that approximates the sample size is known as the

A researcher wants to make an equation that will predict a person's support for domestic surveillance from a variety of demographic characteristics (e.g., age, income). What method will they use?   A) Multiple regression   B) Correlation   C) Two-factor ANOVA   D) One-sample t-test

The records of a light bulb manufacturer show that, when the manufacturing machinery is working correctly, the defect rate (due to imperfections in the material used) is 1%. The manufacturer's control department periodically tests samples of the bulbs, and when 1.25% or more are defective, they call repair technicians for service. The control department is going to take a random sample of 4400 light bulbs. Let p be the proportion of defective light bulbs in the sample assuming the machinery is working correctly. A) find the mean of p b)find the standard deviation of p c)Compute an approximation for P≥p0.0125, which is the probability that, assuming the machinery is working correctly, the repair technicians will be called. Round your answer to four decimal places.

The records of a light bulb manufacturer show that, when the manufacturing machinery is working correctly, the defect rate (due to imperfections in the material used) is 1%. The manufacturer's control department periodically tests samples of the bulbs, and when 1.25% or more are defective, they call repair technicians for service.   The control department is going to take a random sample of 4400 light bulbs. Let p be the proportion of defective light bulbs in the sample assuming the machinery is working correctly. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of p.   (b) Find the standard deviation of p.   (c) Compute an approximation for P(P ≥ 0.0125), which is the probability that, assuming the machinery is working correctly, the repair technicians will be called. Round your answer to four decimal places.

Let's talk that scenario and work with some fictional data from it:  Let's imagine there was a question on the survey that asks "On average, how many times a day do you worry about COVID-19, either for  yourself, family, or community?  Below is some data for 10 respondents.  In the text box below (NOT on your scratch work),describe all of the steps you would use  to calculate the appropriate type of t-test (independent or paired  samples), given we want to compare Trump voters to Clinton voters. ***For this question, just list the steps - do not do any calculations. Since you are only able to see one question at a time, it's recommended that you also jot these steps down somewhere you can use them for the next question That will be in the next question. Your list will have at least 6 steps. Your last steps will involve the hypothesis test.     Number of times worry per day Voted for  in 2016 1= Clinton 2 = Trump 4 1 2 1 14 1 3 1 0 1 3 2 5…

To determine the average length of hospital stay for patients who were hospitalized with and recovered from Covid-19, a physician randomly surveyed 100 of his patients and determined their average length of hospital stay. Identify the population, parameter, sample, and statistic for the above scenario. Write "NONE" for any information that is missing.