Quarter 4: Performance Task The following are scores of random Grade 10 learners in a 1 Science Math 85 120

Q: PROBLEM SET NUMBER 7: Measure of Variability for ungrouped data Find the Range, Variance, and…

A: Given 123,1211,133,45 n=4

Q: If an organization wants to test whether a majority of its employees are dissatisfied with their…

A:

Q: weight of filled bags [g] an automatic filling. 56 158 154 133 141 130 144 137 51 146 156 138 138…

A:

Q: Which of the following assumptions is necessary for the validity of the t-test? * The population of…

A: It is given that the statements about to the assumptions is necessary for the validity of the…

Q: Find the proportion of customers who use ATMs less than times 55. Use four decimal places for your…

A: It is given that  From first data: Mean, μ = 40 Standard deviation, σ = 11.3   From second data:…

Q: The sample size criteria for multinomials is that all expected group counts need to be at least 5…

A: Multinomial distribution: A discrete r.v. X=(x1,  x2 , ......xk) is said to be multinomial…

Q: Personnel tests are designed to test a job​ applicant's cognitive​ and/or physical abilities. A…

A:

Q: Suppose you flip two coins. What is the probability of getting at most one heads? Give your answer…

A:

Q: N Shoot_lenght Treatment 300 Shoot_lenght Treatment N Mean Median Minimum control 60 7.2383 6.6500…

A: Box plot is used to determine whether the data observation is skewed or not. It is calculated using…

Q: The Department of Health plans to test the lead level in a specific park. Because a high lead level…

A: To find: 1. Null hypothesis 2. Alternative hypothesis 3. Type I error

Q: Linear Regression and Correlation. X y 3 -13.78 4 -14.64 5 -7.9 6 -10.76 7 -19.82 Compute the…

A: From the given information we find regression equation and correlation.

Q: b. A quality study was performed on the manufacture of integrated circuits. A sample of 1200 units…

A:

Q: If a confidence interval for a binomial proportion is (11.854, 13.385), which of the following would…

A: Given : a confidence interval for a binomial proportion is (11.854, 13.385).

Q: 1. Below are the number of hours spent by teachers and students in using gadgets daily. A sample of…

A: given data

Q: Suppose Table 3b gives us the IQ range and the possible occupation employment, find out what…

A: Given that: 132 128 106 96 104 99 115 112 90 95 127 113 103 96 101 104 90 127 103 106 122 109…

Q: 7. A company is considering using Markov theory to analyse consumers switching between the five…

A: “Since you have posted a question with multiple sub-parts, we will solve second sub-parts for you as…

Q: Question 2 The head teacher of the New Wings Secondary School ask the Math HOD whether the…

A: Normal Distribution: The normal distribution is a balanced distribution function around its mean,…

Q: y analysis has established the historical risk pre uld potentially be included in your calculations:…

A: Given as,

Q: Based on the following scores of X and Y, calculate the Pearson correlation. X Y 60 6 40…

A: To find: Pearson correlation coefficient

Q: 100 among 600 articles are defective if the maximum Aries probability 0.99 is 0.02. Find the sample…

A: Solution

Q: Samples of students where drawn from two universities and from their weights in kgm and standard…

A: Given information: x¯1=55s1=10n1=400x¯2=57s2=15n2=100 Null Hypothesis: H0:μA=μB Alternative…

Q: The estimated 95% Confidence Interval for Mean Income is 22,138 to 22,510. Which of the following…

A: Solution Given the 95% CI for the mean is (22,138 , 22,510)

Q: Use z scores to compare the given values. The tallest living man at one time had a height of 246 cm.…

A: z-score formula is

Q: Car Mazda RX4 Mazda RX4 Wag Datsun 710 Hornet 4 Drive Hornet Sportabout Chrysler Valiant mpg 21 21…

A: To estimate the population in a typical research study for a particular degree of accuracy the…

Q: Statistical Analysis - Data Management  Per each graph, answer the following: Any relevant…

A: Bar chart compares the categories of a variable.

Q: Let X denote the vibratory stress (psi) on a wind turbine blade at a particular wind speed in a wind…

A: The answer is attached below,

Q: 8.67 Free recall memory strategy. Psychologists who study O memory often use a measure of "free…

A:

Q: Do you think statistics is useful in business analysis? Discuss in not more than 150 words

A: Statistics in Business Analysis: Statistics plays a significant role in Business Analysis. To study…

Q: Three people are running for president in a certain school organization. If there are 508 voters,…

A: Number of voters = 508

Q: why is it 139 and not 138?

A: Please find the explanation below. Thank you

Q: (i) What do you mean by Binning ? Explain different method of Binning? (ii) For the Age data given…

A: Central tendency are used to measure the average observation of the data set. Measure of central…

Q: a. Test for the significance of regression using a = 0.01. Use t-test. What conclusions can you…

A: Regression are used to predict the dependent variable based on the independent variable. Standard…

Q: Do you think statistics is useful in business analysis? Discuss in not more than 150 words

A: Solution: Do you think statistics is useful in business analysis?

Q: According to the National Center for Education Statistics, 37% of STEM gradu- sample of 40 random…

A: Given Sample size=40 X=21

Q: A random sample of n = 12 E-glass fiber test specimens of a certain type yielded a sample mean…

A: Given: n = 12 x¯ = 20.2 s = 1.5

Q: a. What is the probability that no questionnaires are filled out and returned? [Select] b. What is…

A: It is given that the x be the number of questionnaires that are filled out and returned. X ~ B( n =…

Q: QPA's are weighted averages where the weights that are used are the number of credits. Find the…

A: Given Credit hours 3 C  4 A- 1 B

Q: The Department of Motor Vehicles office tried a new customer service system after people complained…

A: Positively skewed curve means the right end of the curve is more flatter. Otherwise,…

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: Solution-: Given:μ=40,σ=11.2 We want to find  the proportion of customers who use ATMs between 30…

Q: 2. a. It is known that 4% of the screws produced by a company weigh less than their specified value,…

A:

Q: A researcher is curious to see if the amount of time spent on social media influences how often…

A: Since, it is not mentioned which question to be answered, we'll be answering the first question…

Q: A researcher is interested in finding a 90% confidence interval for the mean number minutes students…

A: Given n=114 X-bar=32.2 S=11.2

Q: 8.81 Underwater sound-locating ability of alligators. Alligators have shown the ability to determine…

A: Given data number of success , x= 42 sample size, n =50 population proportion,p= 0.5

Q: of Homogeneity of Variances df1 df2 54 oups ps 3 Sum of Squares 76 Sig. .052 ANOVA df Contrast…

A: *Answer:

Q: At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of…

A: Given problem Given that   At a local high school, GPA's are normally distributed with a mean of…

Q: 3.7.23. Suppose that X and Y are discrete random va ables with 4-x-y PX,Y (x, y) = *(4-x-)!()*()'()*…

A: Given: PX=x,Y=y=4!x!y!4-x-y!12x13y164-x-y       0≤x+y≤4

Q: 1. a. A psychologist wants to determine whether the prevalence of peer problems of adolescents vary…

A: Given that: Mean = 10.8 gm Standard deviation = 0.2 Px¯>10.82=0.006

Q: Agree Somewhat agree Somewhat disagree Disagree A. 40% C. 76% Age (years) 18-34 35-54 55+ 20 12 4 18…

A: Given, Each person in the survey summarized in the table was asked their response to the statement…

Q: RST M0.09 0.25 0.19 N 0.31 0.16 0.00 4.P (RUS) 5.P(RC) 6. P(M)=

A: Given P(R)=0.40 P(S)=0.41 P(T)=0.19

Q: Suppose data on root length (in mm) were obtained from roots from the three set-ups: (1) negative…

A: Inferential Statistics: This part of statistics deals with making conclusions from the analysis.…