A principal of a college wants to estimate the proportion of smokers among his students. What

Q: If 84 of the 136 participants in club activities are residents, what is the ratio of nonresidents to…

A:

Q: there are 8 girls and 5 boys on the math team . which ratio correctly describes the relationship…

A: There are 8 girls and 5 boys on the math team.  Ratio indicates how many times one number contains…

Q: In order to have a margin of error of 2%, people should be surveyed.

A: we are given that 24% people consider summer as their favourite season (p) = 0.24 to find  number of…

Q: Find the proportion of employees who take at least three personal days.

A: Given : Let random variable "X"  represent the number of personal days the employees take in a year…

Q: What proportion of students studied more than 4 hours?

A: Given that Total number of students = 240 Number of students who studied more than 4 hours = 50

Q: A five by seven rectangle is centered on a ten by ten square.  What percent of the square is covered…

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Q: The data shows that the percentage 015

A: Given the data shows that the percentage of female cigarette smokers in a certain country declined…

Q: Compare the married and divorced groups in the very happy category with reference to their…

A: Given: A: Married people B: Divorced people X: Very Happy people XA=600  nA=1413     XB=93  nB=485…

Q: How do I use a ti 84 plus calculator to find population proportion

A: A population proportion is a fraction of the population that has a certain characteristic. Suppose x…

Q: Among the people in the age class "18 - 24", what is the percentage of people who prefer "Soft…

A: Given that Number of people who prefer soft drinks and in the age class 18 - 24 = 90 Number of…

Q: In a survey 500 adults were interviewed, 150 said they had early medical checkup. Find the 95% for…

A: Givensample size(n)=500No.of adults said they had early medical checkup(x)=150p^=xn=150500=0.30

Q: Estimate what percentage of the class received a B

A: Introduction: In a pie chart, the complete circle of 360 degrees indicates the complete, 100% of the…

Q: Could you fill out the chart?

A:

Q: Estimate the measure of ZOPQ to the nearest 10°.

A: Estimate the angle nearest 10°.

Q: Could you explain how to find the last question which talks about proportion?

A: First understand proportion Proportion means ( how many parts from total) Example : One apple is cut…

Q: What’s the percentage for the frequencies?

A: We have convert data in proportikn and percentages

Q: In a shipment of 500 light bulbs, 25 of them were broken. What percentage of the light bulbs were…

A: Given ,  In a shipment of 500 light bulbs , 25 of them were broken . We have to find the  percentage…

Q: Nielsen media research determined the precise proportion of all Americans watching the super bowl by…

A: Population is the set of all objects of interest. Sample is a subset of the population. A sample is…

Q: Suppose r is .84, compute proportion of variation is explained?

A: From the given information, it is observed that r=0.84.

Q: What is the estimate of the common population proportion?

A: To find: The estimate of common population proportion

Q: , find the percentage error in

A:

Q: If a person’s z score equals -2.02, what is their percentile?

A: Given problem Given that   Given Person's z score =  -2.02 Using the Standard Normal Table ( Z Table…

Q: A group of preschoolers has 15 boys and 12 girls. What is the ratio of girls to boys as a…

A: The group has, 15 boys and 12 girls. So, the ratio of girls to boys is, 12 : 15 = 4 : 5

Q: The median salary of the 1,264 teachers in a large public school district is $39,350. If the 66th…

A:

Q: Find an estimates of the average number of accidents per week in two different junctions.

A: Here given, Speed cameras (SC) are used to reduce the risk of accidents in accident-prone zones in…

Q: The median annual salary of police officer was 384,000 pesos. If the 25th percentile for the annual…

A: GIven, Median = 384000 25th percentile of annual salary = 282525       To find,   P (282525 < X…

Q: If 90% of the athletes who test positive for steroids in fact use them, and 10% of all athletes use…

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Q: What is the percent of deaths in 2003, or after 2010?

A:

Q: Explain the concept of coefficient of Determination?

A: Coefficient of determination: The coefficient of determination is defined as the proportion of…

Q: When 410 college students were surveyed,150 said they own their car. Find a point estimate for p…

A: Given Data: The number of college student was surveyed is: n=410 The number of a student owning…

Q: What percentage of scores are between scores 75 and 89?

A: By emperical rule  P(-1<Z<1)= 0.68 P(-2<Z<2)=0.95 P(-3<Z<3)= 0.

Q: identify a column in the table with data at a ratio level

A: Here you've given that data for Reputations of 10 companies in the U.S. and it is as follows, And…

Q: What percentage of scores are between scores 68 and 82?

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Q: What percentage of people are men who like movies?

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Q: Raymond wants to estimate the percentage of parents that use cloth diapers. He asks a randomly…

A: According to the provided information, The data set will represent the collection of response…

Q: Explain why the proportion of the area to the left of z = –2.58 is .49%.

A: Here we have given that, P(z<-2.58)=0.0049 Z is standard normal random variable. i.e. z is…

Q: In a survey, the median household income in a country was found to be £27000, and the mean household…

A: Given: Mean=53000Median=27000

Q: Out of 1000 people surveyed, 850 said they like chocolate.  What proportion of people surveyed said…

A: Given: The total number of people surveyed is 1000 850 people said they like chocolate We have to…

Q: In a survey 300 adults were interviewed, 123 said they had yearly medical checkup. Find the 95% for…

A: Sample size is n = 300 Number of adults who had yearly medical checkup, X = 123 The critical value…

Q: Explain the difference between  a. frequency and relative frequency. b. percentage and relative…

A:

Q: Define explained variation?

A: Variability (also called spread or dispersion) refers to how spread out a set of data is.…

Q: Identify the correct scatterplot that shows how backpack weight relates to body weight.

A: Answer: From the given data The scatter plot is

Q: The percentage of men who meet the height requirement is %.

A: Men's height are normally distributed with : Mean , µ = 68.7 Standard deviation , σ = 3.4

Q: What does the margin of error for the estimate of a population proportion tell you?

A: The formula for margin of error can be written as:

Q: A diastolic blood pressure greater than 90 is classified as hypertension (high blood pressure). What…

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Q: What percentage of this grid is shaded?

A: To find the percentage of the shaded grid

Q: What is Approximate Numbers?

A:

Q: A biologist looked at the relationship between number of seeds a plant produces and the percent of…

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPART PLZ REPOST FOR REMAINING PARTS

Q: Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and 1.73

A: Given data To Find the percentage of data that lies below -2.40, above 1.73, and between -2.40 and…

Q: Students surveyed boys and girls separately to determine which sport was enjoyed the most. After…

A: