The business college computing center wants to determine the proportion of business students who have personal computers (PC's) at home. If the proportion exceeds 25%, then the lab will scale back a proposed enlargement of its facilities. Suppose 200 business students were randomly sampled and 65 have PC's at home. Find the p-value for this test using level of significance=0.05. Round your answer to nearest ten-thousandth.

Q: what is the average number of traffic accidents

A: Discrete series means where frequency  of a variable are given but the variable is without class…

Q: Please help with the last part of this question finding the test statistic. A study was conducted to…

A: Given n1=312 X1=63 n2=300 X2=12

Q: A Seattle consumer agency believes that plumbers’ rates are too high and wants to estimate the mean…

A: GivenConfidence Interval(c)=95%Margin of Error(E)=3%=0.03Let…

Q: According to a national statistics bureau, 3.7% of males living in the Southwest were retired…

A: Given Information: 3.7% of males living in the Southwest were retired exterminators. i.e.,p0 =…

Q: new soft drink is being market tested. A sample of 356 individuals participated in the taste test…

A: Formula : Test statistic :

Q: A teacher found that the mean number of hours her 12 students spent studying for an AP Statistics…

A: old mean for 12 students = 6.7 sum of 12 students = 6.7*12 = 80.4

Q: The absolute difference between the population mean and the sample mean is called the

A:

Q: Imagine that the pregnancy test accurately indicates pregnancy in 97.5% of the people who have it.…

A: The miss rate will be 2.5%

Q: What length of nails is considered to be at the 58th percentile of all nails?

A:

Q: Has To answer that question, we consider the Cherry Blossom Race, a 10-mile race ru Washington D.C.…

A: note that,  population standard deviation is known.

Q: cognitive psychologist has recently developed a test to measure the emotional intelligence of…

A: Given,mean(μ)=95standard deviation(σ)=10

Q: what does being in the 60th percentile mean?

A: Given that 60th percentile   Let a student got 60th percentile in a exam

Q: Describe about the Converting a Raw Score to z.

A:

Q: Compute the standard error of the mean from the following scores; 45, 34, 65, 47, 15, 25 Round your…

A: Given data: scores; 45, 34, 65, 47, 15, 25 To find: standard error of the mean

Q: According to a college survey, 89% of all students work full time. Find the mean for the number of…

A: It is given that the number of observations are independent with the probability of success p = 89%…

Q: What is the percentile rank of a bag that contains 1025 chocolate​ chips?

A: The mean is 1252 and the standard deviation is 129.

Q: Please explain how you got the 9.36 z-score test statistic?

A: Z for difference of proportion is given by,  Z= p1-p2/(S.E.)  SE is standard error which is…

Q: A candy manufacturer has replaced 5.17% of their chocolate bars with a new mystery flavor. Find the…

A: Given: Sample size (n) = 424 p(chocolate bars with a new mystery flavor) = 5.17% = 0.0517

Q: If the highest paid soccer platyer has his salary doubled, which of these will change? Can you…

A: We have to find correct options which will change.

Q: Addmissions officer sampled 124 entering freshmen and found that 35 of them scored less than 530 on…

A: According to the provided information, x=35 n=124

Q: Using excel the median is 16.70 but when I calculate it manually it comes to 13.9. Why is excel…

A:

Q: hat is a percentile and how do we plot them on box and whisker plots?

A: Percentile is the value in statistics which divides the population in two groups. The certain…

Q: I had to find the 20th percentile with the following data.    0, 1, 2, 2, 2, 3, 4, 4, 4, 8..... My…

A: We have given the data, 0, 1, 2, 2, 2, 3, 4, 4, 4, 8 And we have to find 20th percentile ?

Q: explain what is measured by the sign of a z -score and what is measured by its numerical

A: here use basic of standard normal random variable z -score

Q: What is the 75th Percentile of a data set when the Inter Quartile Range (IQR) is 12.5 and the first…

A:

Q: Explain about the Mean Difference Score.

A:

Q: doesn't the mean of a sample population equal the true proportion?

A: Yes, the sample population is equal to true proportion.

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.