ipie Assess it Da'sheunna Purifoy PAP Alg 2-2903012-43200P-1 / 4th Quarter Lessons / Week 7/ Lesson 149 All changes saved 1. The owner of a nationwide chain of shopping malls is interested in the buying habits, on any given day, of the people who shop at the malls. Which sentence describes the best sample the owner could use to make inferences about the population? O Randomly select a sample of shopping malls from the chain throughout the nation and survey a random sample of the people who shop at the mall each day of the week. O Choose one shopping mall from the chain and survey all the people who shop there every day of the week. O Randomly select a sample of shopping malls from the chain throughout the nation and survey a random sample of the people who shop at the mall on Friday. O Choose one shopping mall from the chain and survey the managers of the three largest stores about the habits of the people who shop in their stores.

Q: o test whether the mean time needed to mix a batch of material is the same for machines produced by…

A: For the given data using Anova single Factor testing the hypotheses at alpha =0.05 L.O.S

Q: What is the sample? O All people O Which food delivery app was used O All US smartphone users O…

A: The survey is conducted on 800 US smartphone users. The variables are whether they used a food…

Q: Classify the type of bias demonstrated in this scenario: Your teacher explains a difficult topic…

A: Given that  Your teacher explains a difficult topic and then asks the students if they understand

Q: Diagonalize the matrix -9-61 A = - 12 9 by writing it as A = PDP-1 P = D =

A: Step 1:

Q: Which of the following are factors that affect internal validity? Select all that apply.

A: Internal validity refers: specifically to whether an experimental treatment or condition makes a…

Q: For which of the following scenarios would it make sense to perform a test for homogeneity? Select…

A: Homogeneity is an critical characteristic in the sample for many surveys.

Q: Researchers examined whether playing motion-sensing versus non-motion sensing games would affect…

A: Given information: Given data represents the ANOVA output.

Q: Inspectors choose 40 envelopes from the 1000 stuffed each hour for visual inspection. What is the…

A: From the provided information, Inspectors choose 40 envelopes from the 1000 stuffed each hour for…

Q: Assess the given data as a student, if n=11 then what is the value of Q3 needed for interpreting a…

A: Givenn=1

Q: Which of the following would be classified as categorical data? Choose the correct answer below.…

A: we have to identify which of option represents categorical data categorical data consists of…

Q: Question: What is the formula for calculating the mode of a set of n observations?

A: There are two formula for mode one is for ungrouped data and other is grouped data

Q: You may need to use the appropriate appendix table or technology to answer this question. Last year,…

A: Given that hypothesized proportion or population proportion is sample size is sample proportion is…

Q: When sample size increases the cost of survey increases Select one: O True O False ouS ACTIVITY

A: Correct Answer True

Q: Timmy asks college students to complete a survey pertaining their academic experience. He then looks…

A: We know that in Primary research , the researcher is directly involved in the data collection…

Q: aformation coming from observation, counts, and measurements, or responses is know Statistics Sample…

A: A data is known as the collection, observations, and responses to surveys.

Q: Translate Every year, the students ata school are given a musical aptitude test that rates them from…

A: Calculation: The Mean aptitude score is,

Q: Statistics students at a state college compiled the following two-way table from a sample of…

A: From the provided information, The table can be constructed as:   Play chess Do not play chess…

Q: 2. Find the mean, median, and mode of the following data. 1) 5, 3, 2, 6, 5, 2, 5 mean: median: mode:…

A:

Q: O Sports and other outdoor activities. In February 2020, Statistics Norway conducted a survey on…

A: x is (approximately) a binomial random variable because it satisfies the properties of a binomial…

Q: Question 10 A past study claims that teenagers in Manila spend an average of 22 hours a week on…

A: Followings are the Explanation of the question Use the Excel and calculate the Sample Mean and…

Q: 2. 7. 6. 5. 1. 4. 3. c) What was the mean level? 7. 6. 1. Mean from a Frequency Table Practice Level…

A: Frequency of an observation is the number of times the observation is repeated in the sample. The…

Q: 5) table be shows scores on a vocabulary test before using a new study guide and tests on a similar…

A: We have given that data  Level of significance =alpha = 0.05 I want to test the new study is…

Q: Find the mode of the following: 1, 1, 3, 3, 3, 5, 5, 8, 9 O 1 O 3 O 5 O 8 O 9 Question 17 Find the…

A: Given data is,1, 1, 3, 3, 3, 5, 5, 8, 9

Q: psychology class were polled regarding the number of hours they spent studying for the last exam.…

A: Enter the data in Excel.

Q: n an effort to gauge how the​ country's population feels about the​ immigration, researchers…

A: Please find the explanation below. Thank you.

Q: Research the Carolina Abecedarian Project at Read the content on http://abc.fpg.unc.edu. the Home…

A: From the given project children were assigned randomly to the two groups that are early educational…

Q: A sample survey by Nielsen Media Research looked at computer access and use of the Internet. Whites…

A: Given: n1=1170n2=1127x1=86x2=105

Q: Fill in the blank with the appropriate word or phrase. Making generalizations or predictions from…

A: Inferential statistics: It is defined as to making generalisation or prediction from the data…

Q: b. Which group is more likely to have taken a vacation in the last year: college graduates or…

A: Given data:   Yes No Total College Graduate 183 67 250 Not a College Graduate 126 124 250…

Q: 9) A survey of 1688 American households found that 14% of the households own at least two bicycles.…

A: Solution 9:  A survey of 1688 American households found that 14% of the households own at least two…

Q: Male Female 45 55 The above shown data is an example of ________ frequency. a. Ungrouped frequency…

A: Categorical frequency: when we collect data in numbers or categorical i.e qualitative data. example…

Q: Reading scores A class of fourth graders takes a diag-nostic reading test, and the scores are…

A: Note: Thank you for the question. Since multiple subparts are posted, according to our policy, we…

Q: . A statistics class is made up of 13 men and 26 women. What percentage of the class is​ male? b. A…

A: a) The number of men is 13 and the number of women is 26.

Q: Identify the population and the sample. Describe the sample data set. A survey of 143 law firms in…

A:

Q: Use the ogive to approximate (a) the number in the sample, (b) the location of the greatest increase…

A:

Q: An inductive statistics which involves making forecasts, estimations or judgments, about some larger…

A: Statistics: Statistics is the aggregate of scientific methods which deals with the collected…

Q: Construct a 90% confidence interval estimate of the true proportion all months of Febuary that the…

A: It is given that Sample size n = 35 Number of times rain fell, X = 21 The critical value of Z at 90%…

Q: Researchers examined whether playing motion-sensing versus non-motion sensing games would affect…

A: Introduction: Denote μ1, μ2, μ3, and μ4 as the true mean hostility scores of the people who play…

Q: grade 7 students (A, B, C, D, E, and F) ran the following distances in kilometers in 2 hours: 4√2,…

A: We will represent this on number line.

Q: d. What is the minimal sample size needed for a 95% confidence interval to have a maximal margin of…

A: If both the expected number of success and expected number of failures are greater or equal to 10,…

Q: how do you construct a pie chart with a given data?  an example will help.

A: Pie charts:A pie chart is a circular graph that is divided in to segments where each segment…

Q: ential statistics, you infer from a ______ to a ______. 1. larger population; smaller sample 2.…

A: In inferential statistics, a random sample of data from the population is used to describe and make…

Q: An educational psychologist presented a task to a sample of twenty five young children. The table…

A:

Q: Explain what the symbols d and s, represent. What does the symbol à represent?

A: The symbol d denotes the difference.

Q: Subject: Psychological Statistics Topic: Performing T-test Instruction: Please follow the directions…

A: One Sample t-test: It is used to test the mean of a single sample against a known mean. Dependent…

Q: Find the​ mode(s) for the following group of data items.     20, 17, 16, 15, 21, 18, 14, 16 Select…

A: Given the data set. 20, 17, 16, 15, 21, 18, 14, 16 The mode is the value that occurs more often.…

Continuous Probability Distributions

Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.

Normal Distribution

Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!