a)Give the z-score for a  length measuring 78.5cm (Round to 2 Decimal Places). b)Approximately what percentage of the general population have a length above 80cm?  c)Approximately 16% of the general population will have a length measuring __??__cm or less?

Q: A group of 30 students were sampled and measured their height. The average height was 168cm, with a…

A: Obtain the weight represents the 5th percentile. The weight represents the 5th percentile is…

Q: Assume the cholesterol levels of women can be described by a Normal model with a mean of 197 mg/dl,…

A: The mean is 197 and the standard deviation is 28.

Q: Practice question #8. According to one study, babies' birth weights are normally distributed with…

A: Population mean=120Population standard deviation=8

Q: The correlation between the depth (in feet) and the length (in feet) for a sample of caves is found…

A: Given, The correlation between the depth (in feet) and the length (in feet) for a sample of caves is…

Q: 5. Diastolic blood pressures are assumed to follow a normal distribution with a mean of 85 and a…

A:

Q: At wind speeds above 1000 centimeters per second, significant sand-moving events begin to occur sand…

A: The hypotheses are, H0: µ≤1,000 centimeters (The wind speed is less than or equal to 1,000…

Q: The height of students at the SFSU dormitory is normally distributed with a population mean of 66…

A: For the given distribution of heights (in inches) of the students, it is given that:The mean,…

Q: In Major League Baseball, the average fastball pitch is 90 miles per hour, μ = 90, with a standard…

A: Given, the average fast ball pitch is 90 miles i.e. µ=90. And has a standard deviation of 3 miles…

Q: Clothing companies find it unprofitable to service every tall or very short adult female. It was…

A: The data is as follows: Population mean, μ=70.2 inches Population sd, σ=4.2 inches

Q: A cholesterol drug company wants to market their drug to women if their cholesterol is in the top…

A: Solution: Let X be the cholesterol level. From the given information, X follows normal distribution…

Q: eting the height requirement. Wh. acters at the amusement park? the height requirement

A: the survey found that men's height is normally distributed with a mean of 67.8 and a Standard…

Q: The speed limit of a road is 65 miles per hour. The speed of a car on the highway follows a normal…

A: Note: Hi there! Thank you for posting the question. Unfortunately some portion of the question seems…

Q: The cholesterol levels of an adult can be described by a normal model with a mean of 184 mg/dL and a…

A: Given  Mean=mu=184 Standard deviation=sigma=30 X~Normal(mu=184,sigma^2=30^2) Note:According to…

Q: Assume the speed of vehicles along an open stretch of a certain highway in Texas that is not heavily…

A: It is given that mean is 71 and standard deviation is 3.125.

Q: The average amount of rainfall in Puerto Rico last month was 3.5 inches, according to the National…

A: Given information Mean µ = 3.5 inches Standard deviation σ = 0.8 inches

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A: Given,  Permafresh - 15,13,16,12,11 Hylite - 18,14,19,16 α = 0.02

Q: 2.) A ski gondola in Vail, Colorado that carries skiers up a mountain bears a plaque stating that…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: "Durable press" cotton fabrics are treated to improve their recovery from wrinkles after washing.…

A:

Q: An entrance examination is to be conducted to 1500 incoming freshmen students at Gordon College…

A: Followings are the Explanation of the question Let X be the freshmen students at GordonCollege which…

Q: what would be a good hypothesis for calculating the average speed for cars

A: Introduction Hypothesis is an assumption that is being tested.

Q: The average number of acres burned by forest and range fires in large new mexico country is 4,300…

A: According to the given information, we have Mean = 4300 Standard deviation = 750 The distribution is…

Q: The accounting department at Weston Materials, Inc., a national manufacturter of unattached garages,…

A:

Q: A ski gondola carries to the top of a mountain. Assume that weights of skiers are normally…

A: Given :  Load limit = 3500lb Number of passengers = 25 mean = 180lb standard deviation = 44l

Q: Chebyshev's Theorem states that the percentage of measurements in a data set that fall within three…

A: The Chebyshev's theorem provides bounds on the probability for distributions for which mean and…

Q: In a county male height is normally distributed with a mean of 175 cm and a standard deviation of 6…

A: Given that.   X~N( μ , ?^2 )   μ=175   , ?=6   Z-score =( x - μ )/?

Q: Suppose that weights of 5th grade elementary girls are normally distributed with mean µ = 64 lbs and…

A:

Q: NBA basketball players have a mean height of 79 inches and a standard devaiation of 3.5 inches.…

A: Solution: Let X be the height of NBA basketball player. From the given information, µ=79 inches and…

Q: 9. Weights of walleye in a lake are normally distributed with mean 4.8 pounds and a standard…

A: A z-score represents the position of a data point in terms of its distance from the mean when…

Q: Naini, Cobourne, McDonald and Donaldson (2008) reported that a specific ratio of height to face…

A: According to the provided data, it is reported that a specific ratio of height to face length of 1…

Q: How does the median birth weight compare to the average birth weight?

A: Given that birth weights of children born in the United States are normally distributed with mean =…

Q: a) What is the mean speed now? What is the new standard deviation? The new mean would be mph. The…

A:

Q: 2. Assume that IQ scores follow a Normal distribution with µ=100 and o=16. Using our IQR rule for…

A: Given, IQ score follows normal distribution with mean 100 and standard deviation 16.…

Q: In a factory producing parts for an electronic appliance, the length of a large  number of parts…

A: From the provided information, Mean (µ) = 3 Standard deviation (σ) = 0.05 X~N (3, 0.05) Here X be a…

Q: allıliter cups. Sometimes, the machine mak

A: Following information is given: Mean = 214 Variance = 81

Q: The specification limits for a product are 8 cm and 10 cm. A process that produces the product has a…

A: To find: The process  capability: Cpk =?

Q: The masses of lettuces sold at a hypermarket are normally distributed with mean mass 600g and…

A: The mean and standard deviation are μ=600 and σ=20. The probability that a lettuces  weigh more than…

Q: need range and standard deviation

A: The given data is, The ascending order of the data is, The no.of observations is, n = 40 The…

Q: A group of 894 women aged 70 – 79 had their height and weight measured. The mean height was 159 cm…

A: We have given that  X~N( μ , ?^2 )   Z-score =( x - μ )/?

Q: It is considered quite common to have feet of unequal length. In a sample of 10 healthy college…

A: Given, It is considered quite common to have feet of unequal length. In a sample of 10 healthy…

Q: To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a…

A: Given,X1=42, σ1=4.7, n1=35X2=45, σ2=4.4 , n2=35and level of significance α=0.10

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.