Find the probability that the length of a randomly selected steel rod is between 248.5-cm and 251-cm. P(248.5-cm < X < 251-cm) -

Q: Imagine a soldier in a trench during an armed conflict. In the enemy camp, inside another trench, is…

A: P(sniper) = 0.001 P(regular) = 0.999 P(hit |sniper) = 0.87 P(hit | regular) = 0.18

Q: Smith works as a welder inspector in a shipyard. He knows from keeping track of good and poor welds…

A: Givenp^=0.05sample size(n)=300

Q: Work out 34.5/4.6

A: Consider the given expression,34.5/4.6

Q: A very good professional baseball player gets a hit about 35% of the time over an entire season.…

A: Solution:- The commentator is wrong because the law of averages does not apply in this situation.…

Q: Is the average time to complete an obstacle course longer when a patch is placed over the right eye…

A: There are two dependent samples which are right and left. We have to find the test statistic and…

Q: Find P(2.03 < z < 4)= a. 0.979 b. 85.66 c. 1.645 d. 0.021

A: To find: Find P(2.03 &lt; z &lt; 4)= ?

Q: Find the probability that the mean of a month’s reviews will take Yoonie from 3.5 to 4.25 hrs.…

A: It is given that μ = 4σ = 1.2n = 16

Q: What is the z-value and area if score is 70 ?

A: The score is 70

Q: Is the average time to complete an obstacle course longer when a patch is placed over the right eye…

A: Let x be the time to complete an obstacle course when a patch is placed over the right eye and Y be…

Q: employees in a company was k2,400,000. The mean yearly salaries paid to male and female employees…

A:

Q: The average number of cavities that thirty-year-old Americans have had in their lifetimes is 8. Do…

A: As per guidelines expert have to answer first question three subparts only dear student please…

Q: A survey of 2390 musicians showed that 398 of them are left-handed. Find a point estimate for p, the…

A: We have find population left handed..

Q: what percentage of pregnancies last longer than 279 days?

A: The given mean 266 days and standard deviation 13 days.

Q: Out of 200 students, 86 use fb, 68 insta, and 29 use both. How many students surveyed use neither fb…

A:

Q: The null and alternative hypotheses would be:        H0:H0:  Select an answer p1 μ1 μd  Select an…

A: Working: Right Left D (D-dbar)^2 40 39 1 3.0625 40 44 -4 10.5625 45 45 0 0.5625 41 41 0…

Q: Find mean of 2 and 10

A:

Q: Find the variance of X X: 73,51,73,182,45,90,111

A:

Q: whats negative skew?

A:

Q: Z score of 0.045

A:

Q: b. The test statistic ( t (please show your answer to 3 decimal places.) c. The p-value = |(Please…

A: Given, the data on the completion time when the patch was placed on the right eye and when the patch…

Q: Find the​ z-score that corresponds to each life span.

A:

Q: Describe how to find approximate p-Values.

A:

Q: The average count calculation errors at a local accounting firm per 12-h shift are 2.8. What is the…

A: Given that : λ=2.8

Q: Find 0.2% of 810

A: Given query is to find the 0.2% of 810.

Q: if the whale is 48 feet is it an outlier?

A: here use basic of Normal distribution

Q: Is the average time to complete an obstacle course longer when a patch is placed over the right eye…

A: Dear students as per guidelines we answer the first three subparts only when multiple different…

Q: In a certain manufacturing plant, 6% of the finished product are defective. Solve for the…

A:

Q: Find the maximum percentage error in an approximate number 11.8.

A: Given approximate number 11.8

Q: What is needed to find a p value?

A: In hypothesis test we define the null hypothesis which is tested for possible rejection under the…

Q: Assume a Normal distribution.  What can be concluded at the the αα = 0.01 level of significance…

A: 1. Two samples are said to be dependent of each other when values of one sample is related with…

Q: A firm produces bolts whose length x is normally distributed with a Me = 78.3 mm and a SD = 1.4mm.…

A: Given information- Population mean, µ = 78.3 mm SD = 1.4 mm Let X be the length of the bolt produces…

Q: The percentage of people who have white blood cell counts over 10,500 is

A: To determine the percentage of people who have white blood cell counts over 10,500, we need to know…

Q: Approximate the probability (4 decimal places) of less than 9900 hits in a day.

A: Hiven ,Hits follow poisson distributionmean (μ) = λ = 10000 per daystandard deviation σ = λ = 10000…

Q: Is the average time to complete an obstacle course shorter when a patch is placed over the right eye…

A: Note: Here only the 8 data points are given NOT 13

Q: Four typists take 15,10,6 and 5 minutes respectively to type a letter. Determine the average time…

A: The time required to type a letter by four typists is given as: 15 minutes, 10 minutes, 6 minutes, 5…

Q: At an exhibition, the probability of visitors on the first day is 3/5. The ticket price for a…

A:

Q: a rate compares two numbers from different categories true or false

A: A rate is a ratio that compares two different quantities that have different units of measure. A…

Q: Define explained variation?

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

Q: George is shooting darts at a target with possible scores 4 and 15. What is the largest score he can…

A: The sum of number of observation involve in the sample or event with equal likelihood to all the…