Compute the indicated quantity. P(A|B) = 0.4, P(A n B) = 0.3. Find P(B). P(B)

Q: c) Find the test statistic, round answer to 1 decimal place. x² = d) What is the p-value? Round…

A: Given: Observed frequency   yes no total treatment 16 50 66 control 9 94 103 total 25 144…

Q: data preparation

A: True

Q: 2. value of E Cx-)? for What is the Scores 2,2. 14!

A: Given  2,2,1,4

Q: A professor gives A's to students with z-scores of +1.50 or higher. a. What proportion of a class…

A: The distribution of proportion should be normally distributed. z-score = 1.5

Q: 12. The table shows that the total of 10,000 people visited the shopping mall over 12 hours. What…

A: Here use given table of time and respective number of people visited the mall Here from given table…

Q: A ponderosa pine forest in Colorado has a pine beetle infestation.  The beetles bore into a tree and…

A: Solution: 1. From the given information, confidence level is 0.90 and E=0.06.

Q: (g) The number of students who received grades of 75 or higher. (h) The number of students who…

A: We have given the data of 80  students.  Note: According to Bartleby expert guidelines, we can…

Q: A survey of 100 fatal accidents showed that 17 were alcohol related. Find a point estimate for p,…

A: Given ,   n = 100  x = 17

Q: hat is the probat 2. In the question above, you should have calculated a z score. Why isn't the z…

A:

Q: What should you do when a < p-value? Accept Ho Reject Ho Fail to reject Ho

A: Concept of p-value:The p-value in hypothesis testing is the probability of obtaining a test…

Q: A sample with a mean of M=8 has an EZ= 56  how many scores are in the sample?   the number of…

A: Given that, Mean = M = 8 EZ= 56  n = ?   Definition of mean :  Mean is defined as sum of all…

Q: Consider the value of t such that the area to the left of-l plus the area to the right of Ir equals…

A: We have to find t such the area to the left of -| t | plus area to the right of | t | equals 0.02…

Q: Using ratio test, what is the value of L? 00 Зп + 2 Z 5n³ + 1 n=1

A:

Q: A microbiologist wants to estimate the concentration of a certain type of bacterium in a waste-water…

A: A microbiologist puts a 0.5 mL sample of the wastewater on a microscope slide and counts 39…

Q: Before an increase in excise duty on tea, 400 people out of a sample of 500 persons were found to be…

A: Solution: Given information: n1= 500  Sample size of people before increase in excise dutyn2=600…

Q: Q4. Among 100 fish caught in a certain lake, 18 were inedible as a result of chemical pollution.…

A:

Q: Compute the indicated quantity. P(A | B) = 0.1, P(B) = 0.5. Find P(A N B). P(A N B) = |

A: We know that PA|B=PA∩BP(B). We are given that P(A|B)=0.1, and P(B)=0.5. So, we have…

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

A:

Q: SmithNM13 8.2.049. (3733597] What is the cost of seeding a rectangular lawn 100 ft by 60 ft if 1…

A: Given The rectangular lawn measures 100ft by 60ft First find the area of rectangular lawn Formula…

Q: You think your car’s fuel efficiency is much lower than it should be. The average fuel efficiency of…

A:

Q: 2.515 Find the absolute error and percentage relative error, when e is approximated by p*

A:

Q: (c) Calculate the coefficient of determination. Give an economic interpretation to the value…

A:

Q: Use the output provided in the formula sheets folder. Using the reduced model, test if X2 is…

A: Given the reduced model as Y=β0+β1X1+β2X2+ε

Q: pothesis using the P-value approach. Be sure to verity the requirements of the test. 0.5 versus H,…

A: The requirement to check the single proportion test is,  npo (1-po ) ≥10 The test statistic is,

Q: The recidivism rate for convicted sex offenders is 8%. A warden suspects that this percent is…

A: Given,n=321x=22p^=xnp^=22321=0.0685α=0.01

Q: Solve for x. Figures are not necessarily drawn to scale. M 49° N 32 49° 54 40

A: To solve for x.

Q: Use the formula  to determine the percentage of marriages ending in divorce after 15 years when the…

A: The requirement is to find the percentage of marriages that will end by divorce after 15 years when…

Q: (c) Which of M10 and S10 is more accurate for this example? (d) How do you explain the result…

A:

Q: Consider a test for µ. If the P-value is such that you can reject H0 for α=0.01, can you always…

A: From the given information, Consider, a test for µ. While testing the µ it is already given that the…

Q: H0: 0.63  Ha:<0.63 a= 0.05 p-hat= 0.592 n= 250 whats the Z-score? whats the P-value?

A:

Q: Dr. Stoney has administered a test to his students. He calculated a x̄= 86 and ?? = 12. a. What is…

A: It is given that the mean is 86 and the standard deviation is 12.

Q: d. between the scores of 35 and 65? e. above a score of 72? of 31 and above a

A: Since multiple parts are given, first two parts are solved with all steps and diagram . Please…

Q: Say you get a z-score of z = 0.35. Find 2 * Pr(Z ≥ |z|)

A: We will use Std. Normal table to find the required probability.

Q: 2. How much of the data can we estimate to be between x-values -2 and 102? There is approximately %…

A:

Q: A survey of 100 fatal accidents showed that 26 were alcohol related. Find a point estimate for p,…

A: Given information: Sample size of the survey of fatal accidents n=100 Number of accidents that were…

Q: chnicians gather a random sample of fill amounts and find that the mean of the sample is 7.5 ounces…

A: We have,  μ=7.3 The null hypothesis states that the mean is equal to 7.3 whereas the alternative…

Q: b. Use the range rule of thumb to find the values separating results that are significantly low or…

A: b. The minimum and maximum usual values are, μ-2σ,μ+2σ=20-2×3.2,20+2×3.2=20-6.4,20+6.4=13.6,26.4…

Q: 4. A student discovers that her grade on a recent test was the 65tm percentile. If 320 students took…

A: The grade of the student is the 65th percentile of the whole class.

Q: (1) What is the value of E(X)? (2) What is the value of Var(X)?

A: Here use basic probability  Probability = (Favorable outcome)/ (total outcomes)

Q: Question 20 nat is the approximate value of x in A ABC below? 650 40° O A 5 O B 11 12 D 15

A:

Q: c. What is the raw score when -0.48 <z< 1.4? d. What is the raw score such that 60% is below it?

A: Given that  μ = 30 , ? = 4.5 Z-score =( x - μ )/?

Q: Events X and Y are such that P(x)= 0.35 and P(x ∪ y) = 0.80. Given that X and Y are independent and…

A: From the provided information, P (x) = 0.35, P (x Ս y) = 0.80 The events X and Y are independent and…

Q: You are conducting a study to see if the proportion of women over 40 who regularly have mammograms…

A:

Q: You think your car’s fuel efficiency is much lower than it should be. The average fuel efficiency of…

A: t-test: t-test is used to test the significance difference between population mean(hypothesized…

Q: A farmer wants to estimate the proportion of her chicken which eat an appropriate amount each day.…

A:

Q: The performance chart of a truck shows that its max speed is 50 Km/h. The truck hauls the loaded…

A: Given that the maximum speed of the truck is 50 km/hr In meter per second we have  Max. speed =…

Q: A sample of students is to be selected to estimate the proportion who have recieved a medical…

A: The known values are,   The sample proportion is, Critical values: By using the standard normal…

Q: researcher thinks that watching violent televisions increases aggressive behavior in children. To…

A: Here we can see that there are 48 TV in the above problem. We divide into three groups.

Q: (c) Compute the P-value. Round the answer to at least four decimal places. P-value

A: Given that  Sample size n=354 Sample mean =25.8 Standard deviation =5.3

Q: ACT scores range from 1 to 36 and are normally distributed where N (21.5, 5.4). SAT scores• range…

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.