Temperatures in June in LA are distributed nearly normally with mean 77 degrees and standard deviation 5 degrees F. In what proportion of days in June in LA is the temperature over 85 degrees?|

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The main temperature in Dallas in July for Dallas Texas is 85° assuming a normal distribution what…

A: Let us denote X=the temperature in Dallas in July X follows a normal distribution with mean= 85 and…

Q: In some reports the mean land coeefficient of variation are given.  For instance, one report gives…

A: Given ,         Average X=2.2and coefficient of variation C.V=2.9 %

Q: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.5…

A: Let X : the lifespan X~N(μ,σ)where mean(μ) =8.5 years            s.d.(σ)=2.7 yearsand sample…

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: The graph depicts IQ scores of 102 and 128, normally distributed with mean 100 and standard…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

Q: A set of data items is normally distributed with a mean of 200 and a standard deviation of 50. Find…

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Q: Researchers fed mice a specific amount of Toxaphene, a poisonous pesticide, and studied their…

A: Step 1: From the provided information,The data values 1.8, 1.9, 2.0, 2.1 and 2.3n = 5A)The mean and…

Q: How to create a frequency distribution?

A: Frequency of each class is obtained by counting the number of times each data point appeared in each…

Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

Q: The lives (in hours of continuous use) of 100 randomly selected flashlight batteries are: Interval…

A: According to the given data, first form the following table:IntervalFrequency(fi)Midpoint(xi…

Q: 3. The amount dispensed by the coffee machine follow the normal distribution with a mean of 5,286…

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Q: Lecture(10.1a): The mean of the population is 50. The standard deviation is 10. (a) if a persons's…

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Q: A pregnancy that continues for longer than 42 weeks is called a post-term pregnancy. What's the…

A: It is given that data is normally distributed with mean=266 days and standard deviation =16 days We…

Q: ) 5.2°F per month

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Q: A data set has a mean of 70.7 and a standard deviation of 6.2. The score of 69, is how many standard…

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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: ONLY SOLVE C The speed at which people type is measured in terms of words per minute (wpm). The WPM…

A: (c) 35% of wpm values are greater than what wpm? Use R. A z-score is a measure that indicates how…

Q: HumanPregnancy Norm STEM Assume that the length of human pregnancies from conception to birth varies…

A: Mean(µ) = 266 Standard deviations (σ) = 16 X ~ N (µ, σ )= N ( 266,16)

Q: elp!!

A: Given: μ=185σ=39

Q: The mean of the population is 50. The standard deviation is 10. If a person row score is 47 (a)…

A: The mean of the population is 50. The standard deviation is 10. If a person row score is 47 (a)…

Q: Researchers fed mice a specific amount of Aldrin, a poisonous pesticide, and studied their nervous…

A: The provided information is as follows:The total number of mice is .The data set of five mice is…

Q: 나 88 100 76 112 124 -20 -1o 1o 20 -5 17 28 39 -20 -10 1o 20

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Q: Scores had a Mean of 82 and a Standard Deviation of 5 0. Find a z score for x =81 and x = 68 Z-…

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Q:

A: Given that IQ scores of adults is normally distributed with mean 100 and standard deviation 15. The…

Q: 9. mean = 676; standard deviation = 60 Page

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Q: Male and female populations of elephants under 80 years old are represented by age in the table…

A: Here the given table is : Age males…

Q: Find the are of the shaded region. The graph depicts the iq scores of adults and those normally…

A:

Q: 9 The table shows the magnitudes of the earthquakes that have occurred in the past 10 years. Use the…

A: We have given the following table Earthquake Magnitude  Frequency  5.0 - 5.9 14 6.0 - 6.9 13…

Q: a population has mean score of 50 if five points are added to each score what is the new mean

A: GivenThe population mean = 50Mean is the average of all the data points in the data distribution. It…

Q: Psychology students in the tzmir University e Dental Aniety Scale question A Click here to view a…

A: As per given data: Mean: μ=14 And standard deviation is: σ=3.5 a). When the value of x is 18 the the…

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…

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.