Suppose a density curve has an area of 0.361 to the left of 12 and an area of 0.428 to the right of 14. What is the size of the area between 12 and 14? Explain your answer

Q: Let X ∼ N(2, 9). Compute P(X ≥

A: Given that  X ∼ N(2, 9) X~N( μ , ?2) μ= 2    , ?=3   Z-score =( x - μ )/?

Q: Describe the distribution of female contacts. Female: 160, 169, 152, 167, 164, 163, 160, 163, 169,…

A: 160169152167164163160163169157158153161165165159168153166158158166 Data is given above.

Q: The average length of a flight by national airlines has been reported as 299 kms. If a simple random…

A: Given n=sample size=30, standard deviations s=42.8, sample mean x̄=314.6, population mean μ=299

Q: A nervous kicker usually makes 72% of his first field goal attempts. If he makes his first attempt,…

A: From the provided information, P (makes first field goal attempt) = 0.72 P (Makes second attempt|…

Q: A junk box in your room contains eighteen old batteries, eight of which are totally dead. You start…

A: As per our guidelines I can solve only first 3 subparts. Kindly post the remaining subpart again and…

Q: a. What is the probability for a reaction time 10% greater than the population mean? P(x ≥ 1.1μ) =…

A: It is given that  Mean, μ = 190 Standard deviation, σ = 20 Z-Score, Z = ( X - μ )/σ Now, 1.1μ =…

Q: Which of the following accurately describes the critical region?   Question 34 options:   Outcomes…

A: Solution-: Which of the following accurately describes the critical region? (a) Outcomes with a…

Q: When a sample size is > an integer. , we can treat s as a and assume the population standard…

A: Given notation  s=sample standard deviations σ=population standard deviations

Q: Q10 Suppose N ~ Poisson(10), and Y N = n ~ Binomial(n, p), for n = 0, 1, 2, .... Q10(i.) Find the…

A: Given that

Q: Belief in Haunted Places A random sample of 285 college students were asked if they believed that…

A: Given,n=285x=106p^=xnp^=106285=0.37191-p^=1-0.3719=0.6281α=1-0.95=0.05α2=0.025Z0.025=1.960

Q: Find two z values so that 44% of the middle area is bounded by them. Use nswers rounded to 2 decimal…

A: Given information: Let 44% of the z values lies between -a and a. That is, P-a≤z≤a=44%=0.44

Q: Los Angeles workers have an average commute of 33 minutes. Suppose the LA commute time is normally…

A: Given that μ=33,σ=15

Q: (b) Sample size: Point estimate: 0 Sample standard deviation: Critical value: Compute 0.000 0.000…

A: It is given that the sample information. Here, need to find out the tabulated values for confidence…

Q: K The probability of flu symptoms for a person not receiving any treatment is 0.028. In a clinical…

A: Given and  Probability of success p=0.028 Number of trials n=1077

Q: a) 2 cos x - √√3 = 0

A: a) The general solution of  cosx=cosα  is  x=2nπ±α    where , nϵZ  in given question, 2cosx-√3= 0…

Q: Find the mean and median values in the frequency distribution: Bathrooms in # of Homes the house 1…

A: Solution-: We want to find mean and median of given frequency distribution?

Q: a. What is the distribution of X? X - N( Hint b. Find the probability that a randomly selected…

A: It is given that  Mean, μ = 106 Standard deviation, σ = 18     Note: According to Bartleby expert…

Q: Which of these is the proper APA format for a single-sample z test?   Question 38 options:   z(72)…

A: We need to find out the correct  APA format   for a single - sample z test .

Q: 3. Consider a Exponential Distribution with parameter of 0.0025 i.e. Exp(0.0025) A. What are the…

A: Given  X~Expo(0.0025) λ=0.0025

Q: Question 3 The production manager at Programmable Products wants you to test whether there is a…

A: Given Information: 6am-2pm shift 2pm-10pm shift 11pm-6am shift 15 18 9 20 21 29 18 22 35…

Q: Part 3. A) In a normal distribution, what is the maximum percentage of data that is at 2 standard…

A: Solution: Normal distribution is a type of a  continuous distribution in statistics.

Q: Suppose you use simple random sampling to select and measure 27 dogs' weights, and find they have a…

A: Given that  Sample size n =27 Sample mean=43

Q: The probability distribution model of winning a gambling game is given as: $40 X P(X) 1 6 $0 5 36…

A:

Q: An IQ test is designed so that the mean is 100 and the standard deviation is 17 for the population…

A: For the distribution of IQ scores for normal adults at the population level, it is given that:…

Q: Use the sample data and confidence level given below to complete parts (a) through (d). K A research…

A: Given information We have given that; in the poll out of 929 respondents 582 said yes. Sample size…

Q: (9) You are dealt a hand of three cards, one at a time. Find the probability that you get no black…

A: total number of cards in a standard deck = 52you dealt a hand of three cards, one at a time.

Q: 3. The Dagupan City Tribune reported that 75% of population oppose same sex marriages, 20% approve,…

A: The question is about categorical data analysis Given : Popl. prop. opposed to same sex marriage (…

Q: If your claim is in the alternative hypothesis and you fail to reject the null hypothesis, then your…

A: The hypothesis essentially may be defined as a supposition, that is purely based on reasoning. The…

Q: When randomly selecting a card from a deck with replacement, are we equally likely to select a…

A: The categorical variable is a card from a deck. Observed values: Heart = 13, Diamond = 8, Spades =…

Q: Find the area under the standard normal distribution curve to the right of z = -1.49. Use The…

A: Given information- We have given normal distribution. We have given the z-score = -1.49 We have to…

Q: Refer to the accompanying​ table, which describes results from groups of 8 births from 8 different…

A: Mean(μ)=E(X)=∑X.P(X)E(X2)=∑x2.P(X)variance(σ2)=E(X2)-E(X)2Standard deviation(σ)=E(X2)-E(X)2

Q: A somewhat outdated study indicates that the mean number of hours worked per week by software…

A:

Q: and the probability using the normal distribution: P(z>-2.02). Use The Standard Normal Distribution…

A: According to the given information, we have Z score = -2.02 (Right tailed)

Q: For the weighted voting system, (160: 100, 90, 60, 50, 10), what is the BPI of player A? (3 decimal…

A:

Q: You are testing the claim that the proportion of men who own cats is smaller than the proportion of…

A: Given n1=80 n2=100 P1-bar=0.45 P2-bar=0.25

Q: A company has 500 employees of them 300 are male and 280 are married. Of the 300 males 190 are…

A: Given Information: A company has 500 employees Of which 300 are male and 280 are married. Of the 300…

Q: If a researcher fails to reject the null hypothesis, he or she can conclude that: Question 35…

A: Question 35  there is no adequate evidence to reject the null. LAST OPTION IS CORRECT. in hypothesis…

Q: Suppose we are studying an extremely right-skewed population with mean ? = 10 and standard deviation…

A:

Q: An elevator has a placard stating that the maximum capacity is 2400 lb-15 passengers. So, 15 adult…

A: Solution-: Given: μ=170,σ=33 The maximum capacity an elevator is 2400 lb -15 passengers. 15 adult…

Q: 2. The VP for Academic Affairs of the University of Pangasinan wished to understand the distribution…

A: Here we’ve to test whether the data contradicts that the distribution of student population in the…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 435 green peas…

A: It is given that 435 green peas and 157 yellow peas.

Q: farmer measured seadlings 1-month after planting and made the table for 10 plants.  If the group is…

A: From the given information we find the 96% confidence interval for standard deviation.

Q: 12. Suppose that it is known that P(A/B) = 0.21, P(A) = 0.69, and P(AUB) = 0.13. (a) Find P(An B).…

A: ∪ ∩ P(A|B) = 0.21 P(A')=0.69 P(A) = 1- P(A') = 0.31

Q: From observations of the weather, it is known that on October 20 the probability of rain is 0.25. A…

A: Consider A and B to be two events, then according to Bayes' theorem, PAB=PBAPAPBAPA+PBAcPAc where Ac…

Q: If a researcher wanted to know the probability than an individuals's systolic blood pressure would…

A: Givenresearcher wanted to know the probability than an individuals's systolic blood pressure would…

Q: 4. [Test for Independence) A research conducted by the Criminology Department of University of…

A: Given: Concern Alaminos city Dagupan city San Carlos city Urdaneta city Major 25 40 35 40…

Q: Managers at an automobile manufacturing plant would like to examine the mean completion time, μ, of…

A: The hypothesized mean is 41 minutes.

Q: Required: Johnson Plastics Incorporated produces cases for CDs. The accounting manager has performed…

A: Given: y = $5000 t-value = 2.5 Standard error SE = $400 Formula Used: Confidence interval = y ±…

Q: 2. Consider a Uniform Distribution U(10, 110) A. State the Probability Density Function f(x) for…

A:

Q: Use SAS output for a random sample of size 20 to answer the following questions. Regression of y on…

A: