The probability P, as a percent, that a certain computer keyboard in a public library will last more than t years can be approximated by  P = 100e−1.2t. (a) What is the probability that the keyboard will last more than 2 years? Round to the nearest tenth.  % (b) After how many years will the probability of keyboard failure be 79%? Round to the nearest tenth.  yr

Q: If p = 30% and n= 300, find X.

A:

Q: What is the student's GPA for that term? Round to two decimal places.   Student's GPA =

A: Given that  Suppose a student had these grades: 3.6 in a 5 credit Math course 2.6 in a 3 credit…

Q: Solve for t. a. e -0.2t - 9 b. e kt. ce(In 0.4)t – 0.5 1.

A: Part a,Given,           e-0.2t=9

Q: What is the t-value associated with 11 degrees of freedom and 2.5% in the tail? (please round your…

A: Solution

Q: P(-1.69 < z < 1.14) = %D

A: P(-1.69&lt;Z&lt;1.14) is given.

Q: ) What would be the first number of days, larger than the mean, that would be considered unusual (an…

A: Given

Q: A friend has a 78% average before the final exam for a course. That score includes everything but…

A: Percent means 100th part of whole. It is denoted by %. a% of b means a100xb.

Q: To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course…

A: From the provided information, Total credit = 5 + 2 + 5 + 4 = 16

Q: The z-score for 960 h is -0.74. Using the answer from Step 1, what percent of these light bulbs will…

A: Let µ be the mean of the distribution and  σ2 be the variance of the distribution. X : lifetime of…

Q: Calculate the probability of 800 heads in 1600 tosses of a coin. If you cannot solve this exactly,…

A: Givenn=1600p=12=0.5      ( getting head in one toss)x~Binomial(n=1600,p=0.5)P(X=x)=(nx)×Px×(1-p)n-x…

Q: LN(1 –.70) -100 8

A: So the value of the experience is 9.63.Explanation:

Q: The size of a radioactive sample in grams after t weeks is given by A = 25(0.91)* . (a) How large…

A: A=25(0.91)t

Q: To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course…

A: The weighted average is defined as,  X¯=∑i=1nXi wi∑i=1nwi,n is the sample size,Xi is the ith…

Q: Determine the value of z* that satisfies the conditions below. (Round your answers to two decimal…

A: From the provided information, The z value needs to be obtained which separates the smallest 16.6%…

Q: Let n = 9. Find n - 1. n - 1 = a/5

A:

Q: Find the g (2) if g (x) = S VE– Idt %3D

A: gx=∫32x3 t-1 dt Now we need to find integration  gx =∫32x3 t-1 dt=23 t-13232x3=232x3-132-23…

Q: An article reports "attendance dropped 7% this year, to 1700." What was the attendance before the…

A:

Q: To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course…

A: Given: 3.5 in a 5 credit Math course2.2 in a 2 credit Music course2.6 in a 4 credit Chemistry…

Q: %3D A population of N= 5 scores has EX= 20 and EX² = 100. For this population, what is the value of…

A: Given information- Population size, N = 5 ⅀X = 20 ⅀X2 = 100 We have to find the sum of squares (SS)

Q: Fnd g Ca) S'n X 1/2 goo=

A: The given function is: gx=∫1sin x 5x+1-1112 dx. Consider the function fx=∫1x 5x+1-1112 dx and hx=sin…

Q: The half-life of Radon-222 is 3.8 days. A 34-gram sample of Radon-222 is monitored for one day. How…

A: Please see the below picture for detailed solution.

Q: To compute a student's Grade Point Average (GPA) for a term, the student's grades for each course…

A: Identify the grades and credits for each course:The student received a grade of 3.6 in a Math course…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.