The following data set represents performance scores from a sample of participants in a psychology experiment. What is the standard deviation of the data set below? Enter your answer in number. If you have decimals, round to the closest whole number. Score: 67, 87, 96, 59, 70, 83, 92, 78, 84, 79, 85

Q: The probability distribution for the number of sales done by a new Number of Sales per day x Number…

A: The probability distribution given in the question is as follows: X P(x) 0 0.16 1 0.19 2…

Q: Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample…

A:

Q: One of the biggest issues facing e-retailers is the ability to turn browsers into buyers. This is…

A: Using  z test for single proportion  test.

Q: INSTRUCTION: Perform an appropriate statistical test using the dataset (Sheet name: Autism) if a…

A: Mean is the measure that used to obtain the average observation of numerical data. It is affected by…

Q: (a) Find P(X/Y ≤t) and P(XY ≤t). b) Find P(XY/Z <t).

A: a) we have to find PXY≤t and P(X≤tY) Consider, P(XY≤t=P(X≤tY)=PXt≤Y now, the denominator t has two…

Q: A medical researcher wants to investigate the amount of time it takes for patients’ headache pain to…

A:

Q: graph

A: In given graph, four  summaries are given through plot, out of four plots two corresponds to control…

Q: The alternative hypothesis, denoted by H0, represents the status quo and involves stating the belief…

A: Since we know that The null hypothesis is denoted by H0 and involves stating the belief that the…

Q: The alternative hypothesis, denoted by H1, represents the opposite of the null hypothesis and is…

A:

Q: 5 Fifty-four players (including Gabe Kaplan and James Garner) participated in the 1980 World Series…

A: No, because A game of game of poker cannot be modeled as a Markov chain, as this poker game is not…

Q: Let X₁,..., Xn be iid n(u,02). Find a function of S2, the sample variance, say g(S²), that satisfies…

A:

Q: to suggest there is correlation in the population. There is sufficient evidence to suggest there is…

A: X Y 15 40 17 40 19 38 20 35 20 31 21 32 22 28 22 25 23 25

Q: CNNBC recently reported that the mean annual cost of auto insurance is 1006 dollars. Assume the…

A: Suppose that the random variable X defines the annual cost of auto insurance.

Q: Let X and Y be independent random variables with means ux, μy and variances o, oy. Find an…

A: Given:  Random variable x and y are independent with means ux, uy  , varience σ2(x) and σ2(y)  E(x)=…

Q: The following data show the number of hours spent watching television for 10 randomly selected…

A:

Q: Suppose two distributions with the following characteristics are given. Distribution A H=46,400…

A:

Q: What is the null hypothesis of a test for correlation?

A: Test is that whether correlation is significant i.e whether or not correlation is zero.

Q: study of 45 members of the Mall Walkers group showed that they could walk at an average rate of 3.3…

A:

Q: The weights for 10 adults are 72, 78, 76, 86, 77, 77, 80, 77, 82, 80 kilograms. Determine the…

A:

Q: Suppose two distributions with the following characteristics are given. Distribution A H=46,400…

A:

Q: You have an independent variable of “drug condition.” The people who get the drug would be the…

A: Sample is the subset of population. It is smaller in size compared to population. It can be any part…

Q: For a standardized normal distribution, calculate the probabilities below. a. P(0.00<z≤2.26) b.…

A:

Q: On Rhea's twitter account her tweets over the years have averaged about 35 likes per tweet with a…

A: here given, population average=35 like population standard deviation=10like   last tweet chosen as…

Q: a. The standard error of the mean is (Round to two decimal places as needed.) b. The probability…

A: It is given that  Mean, μ = 1850 Standard deviation, σ = 510 Sample size, n = 30 Z-Score, Z = ( M -…

Q: Can you please calculate the 95% confidence interval for this problem

A: From the obtained results, the mean of the difference is -2.1 and the standard deviation of the…

Q: The data shown to the right for the dependent variable, y, and the independent variable, x, have…

A: The given data is:   x y   11 110   15 150   12 120   15 130   14 140   10 100…

Q: = 13 ould you expect to find the middle 50% of most pregnancies? and raw samples of size 45 from…

A: Given Mu=265 Standard deviation= 13

Q: a. The mean number of defects is (Round to two decimal places as needed.) b. The median number of…

A: arranging the data in ascending order we get: 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4,…

Q: 30 students were randomly selected from a large group of students taking a certain calculus test.…

A: The population standard deviation is 14.5.

Q: Suppose that X₁, X₂, X3 are mutually independent random variables with the respective momen…

A: a) Given that Consider,

Q: A statistical research yields to the sample proportion of a certain feature in a certain community…

A: It is given that  Proportion, p = 0.56 Margin of error, ME = 0.05 Confidence interval = 90%

Q: Question 5 Which of the following statements is true? The z score is O at the left end of a normal…

A: Normal distribution is the most used and important distribution in statistics. It shows the…

Q: 30 people are selected randomly from a certain town. If their mean age is 60.5 and the population…

A:

Q: Determine the P-value for a two-sided test with t = 2.85 and n=9 O a. 0.015 O b. 0.01 O C. 0.035 O…

A:

Q: The monthly earnings of a group of business students are normally distributed with a standard…

A: Given that  Margin of error =E =132 Population standard deviation =532 93% confidence level.

Q: A survey of 300 union members in New York State reveals that 112 favor the Republican candidate for…

A: The value of x is 112 and n is 300.

Q: (a) A newborn baby has extremely low birth weight (ELBW) if it weighs less than 1000 grams. A study…

A:

Q: 5. The number of trucks that arrive at a loading dock in t hours follow a Poisson distribution. On…

A:

Q: A random sample of 17 hotels in Boston had an average nightly room rate of $165.40 with a sample…

A: It is given that  Sample mean = $165.40 Sample standard deviation = $21.70 Sample size = 17

Q: Sociologists say that 95% of married women claim that their husband's mother is the biggest bone of…

A: Given,n=6p=0.95q=1-0.95=0.05A random variable X~Binomial(n=6 , p=0.95)P(X=x)=Cx0.95x0.056-x      ;…

Q: Do the chi-squared test for independence in Microsoft Excel 365 using the CHISQ.TEST function. 1.…

A: This problem is based on chi-square test of independence. Here Income and marital happiness are the…

Q: The significance level and P-value of a hypothesis test are given. Decide whether the null…

A: Null hypothesis rejected when p-value≤α   Null hypothesis not rejected when, p-value&gt;α…

Q: each step. 10, 22, 25, 31, 32, 39 X - x SUM SUM N-1 SUM VN-1 (X - x)²

A: Mean is the average value. When this value is substracted from each of the values and then that…

Q: Professor Jennings claims that only 35% of the students at Flora College work while attending…

A: Given: Sample size,n= 76 Number of students who have jobs,x= 35  Level of significance=0.05

Q: Find the probability and interpret the results. If convenient, use technology to find the…

A: Given,sample size(n)=42mean(μ)=$62,000standard deviation(σ)=$6500

Q: I use the calculator command 2-PropZInt and 2-PropZTest if I collect         [ Select ]      ["one…

A: The population follows normal distribution assumptions with larger sample size. Here, the two…

Q: The following bar graph shows the per capita personal incomes for six states in 2002. Use this bar…

A: Bar Chart A plot with rectangular blocks is termed a bar chart. Commonly, the diagram contrasts…

Q: a. State a conclusion about the null hypothesis. (Reject Ho or fail to reject Ho.) Choose the…

A: here given , Assume a significance level of a = 0.05Original claim: Less than 51% of adults would…

Q: A statistics professor refutes the students' claim of studying an average of at least 7 hours for…

A: Given information- We have given that a statistics professor refutes the student's claim of studying…

Q: 30 people are selected randomly from a certain town. If their mean age is 60.5 and the population…

A: