Given data: population mean = 25, sample mean = 22, standard deviation = 9.4, sample size = 55, level of significance is 0.05. Complete and interpret a 5 step hypothesis by hand using a Z-test and show each step of your work
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Given data: population
Given
population mean = 25, sample mean = 22, standard deviation = 9.4, sample size = 55, level of significance is 0.05.
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- On a particular production line, the likelihood that a light bulb is defective is 5%. Ten light bulbs are randomly selected. What are the mean and variance of the number of defective bulbs?This assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.Need helop with this question. Thank you :)
- Repeated baseline measurements help improve the ____ of a single-subject study. A.Ecological validity B. Generalizability C. Internal validity D. Sample's representativenessYou suspect that your east-facing portion of your Macintosh apple orchard is producing less apples than your west facing portion. You decide to conduct a study of your apple trees to determine the average production of apples per tree as measured in bushels for both sections. Conduct a hypothesis test at 5% level of significance to determine if the East facing section is producing significantly less apples per tree compared to the West facing section. Use the table below. Sample size Average amount of Standard of trees deviation Bushels West 55 28 East 50 22 12 What is the p-value? p=0.0021 0.025please provide accurate answerChoose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"* Question Completion Status: QUESTION 12 In a random sample of 10 adults each of them ate 100 g of dark chocolate and in another random sample of 15 adults each of them a chocolate. After one hour their blood plasma antioxidant capacity was measured and the summary statistics are given below. ate 100 g of milk Sample standard deviation 6.2 7.2 Sample mean Dark chocolate (DC) Milk chocolate (MC) 171.5 160.0 At 5% significance level do the data provide sufficient evidence that dark chocolate produces a higher mean level of total blood plasma capacity than milk chocolate? Assume that the population distributions are normal with equal variance. antioxidant a. The altemative hypothesis is H1: PDarkc (Consider the following data: −10, −10, 0, 3, −10, 3, 3 Step 1 of 3: Calculate the value of the sample Variance. Round your answer to one decimal place. Step 2 of 3: Calculate the value of the sample deviation. Round your answer to one decimal place. Step 3 of 3: Calculate the value of the range.Using the R studio dataset: tsa <- read.csv("https://remiller1450.github.io/data/tsa.csv") From this dataset, take a sample of n = 10 claims. Record the mean Close Amount of this sample. Repeat this 500 times using a for-loop. What is the mean and the standard deviation of these 500 sample means. Draw a histogram (use freq = FALSE option) of these 500 sample means.A population has a mean μ=76 and a standard deviation σ=20. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=232. Question content area bottom Part 1 μx=enter your response here (Simplify your answer.) Part 2 σx=enter your response here (Type an integer or decimal rounded to three decimal places as needed.)Calculate the standard score (z-score) of the given sample mean. Round your answer to two decimal places. mu=57" and "sigma=14;n=38; bar(x)=62Recommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
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