IQs are measured on a scale with a mean of 100 and standard deviation 15. Assuming that IQs can be modelled by a normal random variable, find the value of k , up to 1 decimal place, such that P(Y < k) = 0.2 where Y is the random variable representing the IQ.

Q: A system consisting of five independent relays is considered closed if a current can pass from A to…

A: From the given information, thee are five independent relays. Let Ei be the event that the ith relay…

Q: What are the uses of dispersion?

A:

Q: The best predicted temperature when a big is chirpimg at 3000 chirps per minute is

A: Here,the regression equation is y=32.63+0.0461x,where y is the temperature and x is Chirps in 1 min.…

Q: it says rounded to two decimal places

A: At a Drones-R-Us, the new MyDrone is 35% off. If the regular price is $500, how much will you pay…

Q: Explain the Difference between Absolute dispersion and relative dispersion?

A: The required answer is given below:

Q: What is the range of the following: 69, 15, 54, 29, 15, 44 Round to 2 decimal places as needed.

A:

Q: What is tan(-5)? [?]

A:

Q: What is the range of the following: 40, 11, 67, 64, 40, 42 Round to 2 decimal places as needed

A: Given data set: 40, 11, 67, 64, 40, 42

Q: what do you understand by frequency polygon?

A: A Frequency polygon is a graph constructed by using lines to join the midpoints of each interval, or…

Q: Explain the role of Statistics in biological science.

A: Statistics is a part of mathematics that involves collecting data, its study, analysis, and…

Q: * = (5, 4, 3, 2, 1) %3D What is r2?

A: x2 is second element from left.

Q: Make a prediction for Sales when Floorspace = 80, Competing Ads = 100, and price = 1,200 (2 decimal…

A: The regression equation is y^=1225.44+11.52FloorSpace-6.935CompetingAds-0.1496Price.

Q: What is the range of the following: 46, 34, 68, 48, 12, 54 Round to 2 decimal places as needed.

A: The numbers are given as following: 46, 34, 68, 48, 12, 54 To evaluate: The range.

Q: Choose to compare the decim -4.6 -2.6 V

A: Given -2.6 and -4.6

Q: What is the range of the following: 15, 50, 71, 48, 56, 40 Round  2 decimal places as needed.

A:

Q: The histograms describe the high temperatures in a certain city on each day of one month. The…

A: The objective of the question is to understand the difference between the two histograms and how the…

Q: , 160, 175, 162, 180, 240. The respective after weights are 142, 171, 162, 142, 171, 235.

A: before  after  150 142 160 171 175 162 162 142 180 171 240 235 Here each sample,…

Q: During a 12-hour period, the temperature in a city dropped from a high of 64°F to a low of 29°F.…

A: given data, 12 hour period  the temperature in a city dropped from a high of 64°F to a low of…

Q: What is the range of the following: 67, 11, 55, 59, 23, 65 Round to 2 decimal places as needed.

A:

Q: An industrial engineer designed a workstation where the seeing task was difficult because of the…

A: An industrial engineer designed a workstation where the seeing task was difficult. The given…

Q: Absolute Freq=12, 8, 10 then  Cumulative Freq=40% , x , 100%

A: Given:   Absolute Freq (f) Cumulative Freq   12 40%   8 x   10 100% Total 30

Q: A goalie allows 4 goals when faced with 50 shots in a game. Determine the experimental probability…

A: Solution ) experimental probability  = number of times event occur/ total no. of trials  P = 4 / 50…

Q: Differentiate between exact and approximate numbers?

A: An exact number is the value which has no uncertainty in it. That is, the car has 4 tyres, which…

Q: percentage change, explain this to me.

A: Percentage change shows that change as a percent of the old value that is

Q: 7. (6 pts ca) Find the most general antiderivative of (a) f(r) = x*+2r+1 (b) f(r) = +2 %3D %3D

A:

Q: Given that SST = 270, R ^ 2 = 0.75 and n = 40 , then the value of SSE is : 76.50 57,50 65.70 67.50

A: R  2 = 0.75 SST = 270

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: What is the range of the following: 34, 74, 60, 10, 39, 35

A: The range is the the difference between the highest and the lowest value of the data.

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.