Estimate what percentage of the class received a B

Q: Find the percentage of data points that lie between -2.31 and 1.85.

A: Assuming the data follows standard normal distribution with mean 0 and standard Deviation 1Finding…

Q: Find the median of 19, 29, 36, 15, and 20.

A: Sort the given data in ascending order. 15,19,20.,29,36

Q: sB2 is a measure of ____.

A: sB2:The term sB2 is the variability between the sample means. The test statistic of F is the ration…

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: Find the 75th percentile of the heights, in inches.

A: Let X denote the heights in a population of adult women. Given that X follows N(mean = 62.5, SD =…

Q: State which measures yyt6of spread you should use and how you decided.

A: Statistics is the branch of applied mathematics in which we do collection, analysis, interpretation…

Q: What is the requested percentage?

A: 4.70c) In  this question, we have given Mean=513 S.D=130 To find the percentage for the score less…

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: A video game store has 60 games to choose from, including 40 sports games. What is the ratio of…

A: From given information,  Number of games in a video store=60  Number of sports games in them = 40

Q: Calculate P (Z < 0). (Round to the hundredths).

A: GivenP(Z≤0)=

Q: What percentage of the shoppers have an email account

A: In the question it is asked to calculate the percentage of shoppers that have an email account.

Q: Make a table showing the approximate values and the actual value, together with the percentage error

A: xy'=12x-3y..................1Let x=e2z=logxdzdx=1xdydx=dydz·dzdx ⇒dydz·1xxdydx=dydzNow equation (1)…

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

A: Estimate the angle nearest 10°.

Q: What do the percentage in this graphic total?

A: It is an important part of statistics. It is widely used.

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

A: To find: The estimate of common population proportion

Q: Find the median of 19, 29, 36, and 20.

A: Given data is19,29,36,20

Q: What percentage of books read 76 books out of 80 total books

A: Solution:

Q: , find the percentage error in

A:

Q: Represent it by a suitable percentage diagram.

A: ANSWER The percentage values are converted into degree values using the following formula. Degree…

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: Find the 45th-Percentile: Pu5 =

A: Given that, Total number of observations = 117

Q: A school held a jump-roping contest. Diego jumped rope for 20 minutes. Jada jumped rope for 15…

A: detailed solution is given below

Q: Plot the data below using the stem and leaf method. a) 320,332,339,343,345,348,351,352,364,376

A: We need to plot the given data using stem and leaf method The solution to the given question is…

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: Find the probability of selecting either a non-smoker or a woman when you select a person at random…

A:

Q: (490, 510)? ne sample mean.

A: Given Data Population Mean,μ = 500.0 Population Standard Deviation,σ = 80.0 sample…

Q: Briefly explain how the officer collects the sample based on stratified sampling

A: Stratified sampling is the type of sampling where we divide our population into different strata,…

Q: How many people surveyed ?

A: The number of people information is included in a sample is the number of people surveyed.

Q: What is the percentage change from 4,000 to 3,400?

A:

Q: What percentage of the coins are pennies?

A: In this question given that there is JAR OF CHANGE  in his room. in his jar Total 600 coins 240  of…

Q: How many scores are in the population?

A: here given, SS = 328 variance = σ2 = 8

Q: Estimate the average by first rounding to the nearest 100: 120, 230, 455, 175 A. 202.50 B. 250…

A:

Q: Find the mean of a student test scores if he earned 5, 93, 85, 90 and 91 points on five tests

A:

Q: Determine the statistical relationship between the average answer time (seconds) and the average…

A: Simple linear regression model: A simple linear regression model is given as y = b0 + bx, where y is…

Q: What percentage of the blocks are red?

A:

Q: Find the SLG Percentage for Mr Hodo with 52 doubles, 31 singles, 2 triples, 61 homeruns, and 335 at…

A: Given, Singles(S)=31 Doubles(D)=52 Triples(T)=2 Homeruns(HR)=61 At bats(AB)=335

Q: Find the change in the average value after removing 5 from the following list of numbers: 45, 60,…

A: Given: List of numbers:45, 60, 89, 115, 120, 99, 103, 130, 5, 101, 69, 75, 98, 107.

Q: Determine the level of measurement of the variable below. Dress Color

A: Quantitative: The interval and ratio scale of measurements are categorized under the quantitative…

Q: What percentage of students completes the test in 45 minutes? b. What percentage of students…

A: (Answer a) Consider X as a random variable that follows a normal distribution with a mean 48 and…

Q: 75 of 500?

A:

Q: The symbol p refers to percentage. O True False

A: We want to tell you above statement is true or false.

Q: Explain the purpose of a measure of variation.

A:

Q: (a) What percentage of plates should be expected to be thinner than 10 mm? (b) What percentage of…

A: Here, µ = 12 and σ = 1.5

Q: A survey was conducted on a group of 190 students.

A: Given, a survey was conducted on a group of 190 students. 10 students are taking electrical,…

Q: What percent of students earned a passing grade of 70 or higher? TEST SCORES:…

A: Solution: The given data is 50, 60, 61, 63, 66, 67, 73, 82, 89 and 92. Total number of scores is 10.

Q: What proportion can be used to find 65% of 90?

A: Given that 65% of 90. To find this value we can use the proportion

Q: 320 is what percentage of 4

A: For percentage divide obtained marks to total marks and multiply by100

Q: Estimate the percentage  66 2/3% 3,300

A:

Q: Determine the measure of CD from the diagram below. 80

A:

Q: (d) On what percentage of days do they get more than 140 pieces of mail? Draw a diagram showing the…

A: You have circled question #d, so I am answering that only. Please mention the question numbers which…

Compound Probability

Compound probability can be defined as the probability of the two events which are independent. It can be defined as the multiplication of the probability of two events that are not dependent. 

Tree diagram

Probability theory is a branch of mathematics that deals with the subject of probability. Although there are many different concepts of probability, probability theory expresses the definition mathematically through a series of axioms. Usually, these axioms express probability in terms of a probability space, which assigns a measure with values ranging from 0 to 1 to a set of outcomes known as the sample space. An event is a subset of these outcomes that is described. 

Conditional Probability

By definition, the term probability is expressed as a part of mathematics where the chance of an event that may either occur or not is evaluated and expressed in numerical terms. The range of the value within which probability can be expressed is between 0 and 1. The higher the chance of an event occurring, the closer is its value to be 1. If the probability of an event is 1, it means that the event will happen under all considered circumstances. Similarly, if the probability is exactly 0, then no matter the situation, the event will never occur.