**Pie Chart: Marijuana Use in the Last 30 Days**This pie chart illustrates the distribution of marijuana use among individuals over the past 30 days. The data is segmented into five categories, each represented by a distinct color. - **Never used (Blue):** 49.1% of the respondents reported that they have never used marijuana.- **Used, but not in the last 30 days (Red):** 28.0% of the individuals have used marijuana at some point, but not within the last 30 days.- **Used 1-9 days (Green):** 14.0% used marijuana between 1 to 9 days in the past month.- **Used 10-29 days (Yellow):** 6.0% reported marijuana use on 10 to 29 days.- **Used all 30 days (Purple):** 2.9% have used marijuana every day over the last 30 days.The chart provides a visual representation of marijuana consumption patterns, highlighting the majority who never use, versus varying degrees of usage among others. ### Probability of College Students' Marijuana UseThe percent of college students' marijuana use for a sample of 94,852 students is shown in the accompanying pie chart. Find the probability of each event listed in parts (a) through (d) below.#### (a) Randomly selecting a student who never used marijuanaThe probability is ____%.*(Round to one decimal place as needed.)*#### Diagram DetailsThe image prompts users to view a pie chart that depicts the marijuana usage statistics among college students. The pie chart likely illustrates various categories of usage, such as never used, occasionally used, regular use, etc., as percentages of the total sample size, aiding in visualizing the distribution over the entire sample.

Name: **Pie Chart: Marijuana Use in the Last 30 Days**This pie chart illust
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Description: **Pie Chart: Marijuana Use in the Last 30 Days**This pie chart illustrates the distribution of marijuana use among individuals over the past 30 days. The data is segmented into five categories, each represented by a distinct color. - **Never used (B

From the pie chart, Percentage Probability Never used 49.10% 0.491 Used, but not in the…

Answered: Marijuana Use in the Last 30 Days Never…

Math

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Marijuana Use in the Last 30 Days Never used, 49.1% Used, but not in the last 30 days, 28.0% Used 1-9 days, 14.0% O Used 10-29 days, 6.0% Used all 30 days, 2.9%

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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23.27 is what needs answerd the other is just info to answer it thank you
In a test of the quality of two television commercials, each commercial was shown in a separate test area six times over a one-week period. The following week a telephone survey was conducted to identify individuals who had seen the commercials. Those individuals were asked to state the primary message in the commercials. The following results were recorded. Commercial A Commercial B Number Who Saw Commercial 148 203 Number Who Recalled Message 62 62 1. What is the value of the test statistic (to 2 decimals)? 2. What is the p-value (to 4 decimals)? 3. Compute a 95% confidence interval for the difference between the recall proportions for the two populations (to 4 decimals).
Suppose a report says that 64% of adults with jobs are currently working from home. Assuming this statistic were true, what would be the standard error of the sample if 500 adults with jobs were randomly selected? Group of answer choices .021 4.61 .004 .128
Your place of employment is trying to determine whether to allow its employees to work from home for2 days a week. Knowing that you’ve previously taken a statistics course, your boss asks you to “figure itout”. You create a survey to gauge employee interest in this area.1. Formerly, your place of employment has tried to give surveys to everyone, a census, but only a fewpeople responded to the email. Your new plan is to randomly choose some employees and administerthe survey yourself. You put everyone’s name on a numbered list and randomly choose numbers untilyou have your sample. What form of sampling is being described here?2. Suppose you want to estimate the percentage of employees who want to work from home. Doingsome research on the internet, you find a recent study that found that 72% of employees prefer a hybridremote-office model. Using that value as your sample proportion, ?̂, estimate how many people youwould need to survey in order to estimate the percentage in your company…
They sampled 361 people. People were allowed to self-identify as a heavy smoker or a non-smoker (mutually exclusive outcomes), and as diagnosed with lung cancer or not diagnosed with lung cancer (mutually exclusive outcomes). All surveyed people were under the age of 55, with similar age distributions in the smoking and not smoking categories. 343 people said that they did not smoke, and of those 343 people, 58 had been diagnosed with lung cancer. Only 18 people said that they were heavy smokers, and of those 18, 14 had been diagnosed with lung cancer. Please Calculate the expected count of people for each cell of the contingency table if the standard null hypo of the chi-square test of independent comes out to be true?
According to the Unified Crime Report, 2006, 16% of property crimes committed in the United States were cleared by arrest or exceptional means. A research suggests that number has changed. O Ho : p = 0. 16 Ha: p +0.16 %3D OHo: p = 0. 16 Ha: p > 0.16 OHo: p=0. 16 Ha: p+0.16 OHo: p=0. 16 Ha:p>0.16 Page 12 of 15 Previous Page Next Page
6.1 Sexual harassment of college students. A survey of 2036 undergraduate college students aged 18 to 24 reports that 62% of college students say they have encountered some type of sexual harassment while at college.1 Describe the sample and the population for this setting 6.4 How often do they play? In the Pew survey described in Example 6.1, those who played video games were asked how often they played. In this subpopulation, 223 adults said that they played every day or almost every day 6.10 How often do they play? Refer to Exercise 6.4 (page 318). (a) Find SE^p, the standard error of ^p. (b) Give the 95% confidence interval for p in the form of estimate plus or minus the margin of error. (c) Give the confidence interval as an interval of percents.
Round up to the nearest integer for a-b.
Violent crimes include rape, robbery, assault, and homicide. The following is a summary of the violent-crime rate (violent crimes per 100,000 population) for all states of a country in a certain year. Complete parts (a) through (d). Q1=273.8, Q2=388.5, Q3=529.1 (a) Provide an interpretation of these results. Choose the correct answer below. A. 25% of the states have a violent-crime rate that is 273.8 crimes per 100,000 population or less. 50% of the states have a violent-crime rate that is 388.5 crimes per 100,000 population or less. 75% of the states have a violent-crime rate that is 529.1 crimes per 100,000 population or less. B. 25% of the states have a violent-crime rate that is 273.8 crimes per 100,000 population or more. 50% of the states have a violent-crime rate that is 388.5 crimes per 100,000 population or more. 75% of the states have a violent-crime rate that is 529.1 crimes per 100,000 population or more. C. 75% of the…
We wish to gather some information relating to the average time a hospitalized Eagle Flu patient remains in the hospital. We randomly sample 16 cured formerly hospitalized Eagle Flu patients and these were the number of days spent in the hospital: 6.09, 8.04, 6.43, 8.58, 10.34, 5.40, 9.87, 9.24, 9.18, 5.06, 5.39, 5.89, 11.91, 8.94, 5.68, 9.85Many surveys of flu hospital stays show that hospitalization length is normally distributed. So, we assume that our sample comes from a normal population with unknown mean of μ days and an unknown standard deviation of σ days. We would like to test whether the average hospital stay length is less than 8.1 days..The null hypothesis is thus H0:μ=8.1 . We will test this against the alternative Ha We want to test at the 8% level.Let x = the sample mean and s = the sample standard deviation.f) Calculate the critical value, tstar, for your test.(negative value)
A police department released the numbers of calls for the different days of the week during the month of October as shown in the table to the right. Use 8.01 significance level to test the claim that the different days of the week have the same frequencies of police calls. What is the fundamental air with this analysis?
Chick-fil-A gets it right. Which fast-food chain fills orders most accurately at the drive-thru window? The Quick Servcie Restaurant magazine drive-thru study involved a total of 7594 visits to restaurants in the 25 largest fast-food chains in all 50 states. All visits occured during the lunch hours of 11:00 A.M. to 2:30 P.M. or during the dinner hours of 4:00 to 7:00 P.M. During each visit, the researcher ordered a maint item, a side item, and a drink. One item was left off of each order; for example, a field researcher could order a burger with no pickles. After recieving the order, all the food and drink items were checked for accuracy. ANy food or drink item recieved that was not exactly as ordered resulted in the order being classified as inaccurate. Also included the measurement of accuracy were condiments asked for, napkins, straws, and correct change. Any errors in these resulted in the order being classified as inaccurate. Chick-fil-A had the fewest inaccuracies, with only 14…