Please do provide explanation to the solutions. It will be much appreciated Thank you.  The time until recharge for a battery in a laptop computer under common conditions is normally distributed with mean of 260 minutes and a standard deviation of 50 minutes. a) What is the probability that a battery lasts more than four hours? b) What are the quartiles (the 25% and 75% values) of battery life? c) What value of life in minutes is exceeded with 95% probability?

Q: The heaviest 4% of fruits weigh more than how many grams? Please give your answer to one decimal…

A: Let x be the particular fruit's weights which follows normal distribution with mean 670 grams and…

Q: The figure below illustrating chemical process concentration readings made every hour. The minimum…

A: Explanation:   From the time-series plot, it is clear that there is no specific pattern in the…

Q: Find the 30th percentile of the blood pressures. Find the 67th percentile of the blood pressures.…

A: Consider a random variable X which represents the diastolic blood pressures of adult women in the…

Q: The distribution of the IQ (Intelligence Quotient) is approximately normal in shape with a mean of…

A: Given information: μ=100σ=15 Standard deviation rule: 68% of the data lies between μ-σ,μ+σ95% of the…

Q: 1) Find the mean and standard deviation of the number of seconds the subjects stay balance for each…

A: Mean: Mean is defined as the ratio of sum of all values to the total number of all values Standard…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: (i) Determine the 90% confidence interval for the true mean time from the model. (ii) Suppose the…

A:

Q: A population of scores has mean 80. in this population, a score of X= 86 corresponds to z= +2. what…

A:

Q: Management at a video game store wants to gain a better understanding of their customers. In order…

A:

Q: IQ scores are normally distributed with a mean of 100 and standard deviation 16. Calculate the…

A: The question is about normal dist. Given : Popl. mean of scores ( μ ) = 100 Popl. std. deviation of…

Q: anic sells a brand of automobile tire that has a life expectancy that is normally distributee cee…

A: Given Mean=36000 Standard deviations=2600 Z=-1.282

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: Scores on a common final exam are normally distributed with a mean of 66 and a standard deviation of…

A:

Q: A normal distribution of scores has the following: mean = 120 standard deviation = 20 What range of…

A: given data normal distribution μ = 120σ = 20 for middle 60%  range = ?

Q: A normal population has mean u=56 and Standard deviation o=8. What is the 85th the population?…

A: We have given that  Mean, μ = 56 Standard deviation, σ = 8

Q: Each year students in a local school district write a national examination. The average on this…

A: Average of a dataset is the mean value of the observations in the data and it is computed by…

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What is the…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 625 grams and a standard…

A:

Q: A particular fruit's weights are normally distributed, with a mean of 269 grams and a standard…

A:

Q: Birth weight, in grams, of newborn babies are normally distributed with a mean of 3290 grams and a…

A: Mean=3290gmStandard deviation =520gm

Q: ENG 342 fınal exam of last semester has a mean score of 78 and a standard deviation of 8. Sally's…

A: Given,mean(μ)=78standard deviation (σ)=8Z-Score=1.5

Q: The birth weights of newborn elephants are Normally distributed with a mean of 160 pounds and a…

A:

Q: Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Assume that a normal distribution of data has a mean of 16 and a standard deviation of 3.Use the…

A: Population mean =16  Standard deviation =3  We have to find the percentage of values lies

Q: Please count it manually without using excel so I can learn how to calculate it 3. A landlord is the…

A: ANOVA: The analysis of variance (ANOVA) is used to determine whether there are any statistically…

Q: Score for the California Peace Officer Standards and Training test are normally distributed, with a…

A: Given X is normal Distributed with mean µ = 69.6 and standard deviation σ = 11.3 now will use…

Q: scores on an english test are normally distributed with a mean of 31.5 and a standard deviation of…

A: X follows a Normal distribution with mean = 31.5 and S.D = 6.9 Then z=(x-mean)/SD = (x-31.5)/6.9…

Q: Please count it manually without using excel so I can learn how to calculate it 3. A landlord is the…

A: Given Information  : A landlord is the owner of an apartment decides to build new rooms for ensuit ,…

Q: The length of time, L hours, that a phone will work before it needs charging is normally distributed…

A: The length of time that a phone will work before it needs charging is normally distributed with  Let…

Q: LSAT test scores are normally distributed with a mean of 151 and a standard deviation of 5. What…

A: Given; Mean=μ=151SD=σ=5 Let X be a random variable which is normally distributed with mean 151 and…

Q: Scores on the Wechsler Adult Intelligence Scale for the 20 to 34 age group are approximately…

A:

Q: A quantitative data set has size 50. At least how many observations lie within three standard…

A: The size of the data set is 50.

Q: SAT college entrance test scores are known to be a normally distributed with a mean of 1045 and a…

A:

Q: calculate the standard deviation of the data shown, 27.7, 10.8, 10.6, 21.1,22.1. round to 2 decimal…

A: Given: Sample data is 27.7, 10.8, 10.6, 21.1, and 22.1.

Q: Find SAT Quartiles. SAT scores are reported on a scale from 600 to 2400. The mean is 1498 and the…

A: For μ=population mean σ=population standard deviation Z score is given by,   Z=X-μσ⇒X=μ+Zσ   The…

Q: What is the value of SS (sum of squared deviations) for the following set of scores? If the scores…

A: The scores are 1, 1, 4, 0

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.