Choose the appropriate statistical test. When computing, be sure toround each answer as indicated.A dentist wonders if depression affects ratings of toothpain. In the general population, using a scale of 1-10with higher values indicating more pain, the averagepain rating for patients with toothaches is 6.8.A sample of 30 patients that show high levels ofdepression have an average pain rating of 7.1 (variance0.8). 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"

Given information: n= 30 Sample size x= 7.1 Sample means2= 0.8 Sample variance μ=6.8 Population…

Answered: Choose the appropriate statistical…

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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A number of attendees at a sporting event were asked their age. The results are depicted in the histogram below. According to the histogram, what percentage of individu- als surveyed are older than 14 but younger than 20? 30 25 25 20 18 15 12 10-14 15-19 20-24 25-29 20
A certain statistics instructor participates in triathlons. The accompanying table lists times (in minutes and seconds) he recorded while riding a bicycle for five laps through each mile of a 3-mile loop. Use a 0.05 significance level to test the claim that it takes the same time to ride each of the miles. Does one of the miles appear to have a hill? LOADING... Click the icon to view the data table of the riding times. Question content area bottom Part 1 Determine the null and alternative hypotheses. H0: ▼ mu 1 greater than mu 2 greater than mu 3μ1>μ2>μ3 mu 1 not equals mu 2 not equals mu 3μ1≠μ2≠μ3 Exactly two of the population means are different from each other.Exactly two of the population means are different from each other. At least one of the three population means is different from the others.At least one of the three population means is different from the others. mu 1 equals mu 2 equals mu 3μ1=μ2=μ3 H1: ▼ mu 1 greater than mu 2…
A survey was given to 18 employees. One question asked about the one-way distance the employee had to travel for work. The results, in kilometers, are shown below. Kilometers Traveled for Work 12 10 18 3 4 28 5 32 26 10 41 85 1 7 8 5 10 15 Find the first quartile of the data.
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.
A survey was conducted on unauthorized use of computer systems. One of the survey questions asked respondents to indicate the percentage of monetary losses attributable to malicious actions by individuals within the organization. The histogram below summarizes the data for the 121 firms who experienced some monetary loss due to malicious insider actions. a. Which measurement class contains the highest proportion of respondents? Answer 5 Question 1 b. What is the approximate proportion of the 121 organizations that reported a monetary loss (%) from malicious inside actions less than 20%? Answer 6 Question 1 c. What is the approximate proportion of the 121 organizations that reported a percentage monetary loss from malicious inside actions greater than 60%? Answer 7 Question 1
For the sample data 7, 9, 10, 11, 13, 22find the standard deviation ( give your answer in three decimal places). Answer:
A researcher has collected the following sample data. The mean of the sample is 5. 3 5 12 3 2 The 75th percentile is 5 8.5 9 10
For scenarios of statistical studies are given below. Decide which study uses a population parameter. And estimated 15% of Americans don't use the Internet. Lakeside family dentistry reported that six of the 15 patients who came in for regular cleaning one day had at least one cavity.
what was the age distribution of prehistoric Native America? Extensive , anthropological studies in the southwestern United states gave the following information about a prehistoric extended family group of 82 members on what is now a native american reservation. for this community, estimate the mean age expressed in years, the sample variance, and the sample deviation. For the class 31 and over, use 35.5 as the class midpoint. 39,16, 20,7
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