A clinic took temperature readings of 250 flu patients over a weekend and discovered the temperature distribution to be Gaussian, with a mean of 101.00 °F and a standard deviation of 0.9820 F. Use this normal error curve area table to calculate each value. What is the fraction of patients expected to have a fever greater than 103.36 "F? fraction above 103.36 "F:

Q: A random sample of 80 tires showed that the mean mileage per tire was 41,700 mi, with a standard…

A: (a) A random sample of 80 tires showed that the mean mileage per tire was 41700 mi, with a standard…

Q: A livestock company reports that the mean weight of a group of young steers is 1156 pounds with a…

A: The use of standard normal probability distribution tables help us in ascertaining percentage of…

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: Solution Here we will use one sample t test to test the mean amount of summer rainfall for the…

Q: the average height of grade 10 students is 148 cm. a sample of 250 students had an average heigh of…

A: Given: μ=148Sample size, n=250sample mean, x¯=148.3sample sd, s=8

Q: A company pays its employees an average wage of $22.50 an hour with a standard deviation of $2.30.…

A: Given data: Mean = $22.50 an hour standard deviation = $2.30 To find: What is the highest 5% of the…

Q: A standard I.Q. test produces normally distributec 13 with a mean of 104 and a standard deviation of…

A:

Q: A local bakery makes wheat bread. The number of grains of wheat in the bread is normally…

A: Let X denote the number of grains of wheat in bread. Given that X follows N(mean = 11.4, SD = 1.3),…

Q: Based on a sample of 25 people, the sample mean GPA was 2.05 with a standard deviation of 0.07 The…

A:

Q: The income of a group of 10,000 persons was found to be normally distributed with mean AED 1750pm…

A: here given  mean =  1750  standard deviation  =  50  here use excel command for probability from…

Q: A factory produces LED bulbs with an average lifespan of 50,000 hours and a standard deviation of…

A: The top 10% of bulbs last for at least how long is obtained below:From the given information, the…

Q: On a recent quiz, the class mean was 76 with a stanbard deviation of 3.1. Calculate the z score (to…

A:

Q: Suppose a company produces lightbulbs with a mean lifetime of 1000 hours and a standard deviation of…

A: we have to find z score

Q: A carpet manufacturer is inspecting for flaws in the finished product. If there are too many…

A: It is known that the sampling distribution of the sample mean x-bar will have a standard deviation,…

Q: A nurse at a local hospital is interested in estimating the birth weight of infants. How large a…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: A distribution of values is normal with a mean of 141.6 and a standard deviation of 44. Find P65,…

A: Given Information: Mean μ=141.6 Standard deviation σ=44 To find Percentile P65: Using a standard…

Q: A preliminary sample of holiday shoppers revealed that the standard deviation of the amount of money…

A: Given data,σ=82E=7z-value at 95% confidence is Zc=1.96n=?

Q: A certain machine makes electrical resistors having a mean resistance of 50 ohms and a standard…

A: Let, X= resistance Given that X follows a normal distribution with mean=50 and standard deviation=4…

Q: A group of male basketball players has a mean height of 79 inches and a standard deviation of 1.7…

A: Introduction: Denote X as the height of a randomly chosen male basketball player. A group or sample…

Q: A small pilot study was conducted to compare cholesterol levels in individuals before and after a…

A: Preliminary calculation:Using the EXCEL formula “=NORM.S.INV(1– (0.05/2))”, the z-value for 95%…

Q: A certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard…

A: Let X be the normal random variable representing the resistance of an electrical resistors, is…

Q: A major credit card company has determined that the amount its customers charge on their accounts is…

A: Given that, Mean = 2800 Standard deviation = 200 Number of customers = 20000

Q: The monthly income from a particular occupation is normally distributed, with a mean of 3800 dollars…

A:

Q: The heights of tomato plants are Normally distributed with a mean of 3.56 feet and a standard…

A: It is given that μ=3.56 and σ=0.25   Use standardization asz=x-μσ

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1022 h with a…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: A nurse at a local hospital is interested in estimating the birth weight of infants. How large a…

A:

Q: A population of 31 scores has a sum of squared deviations value of SS = 250.03. What would be the…

A: Given that the population size is 31. Sum of squared deviations is SS=250.03.

Q: The fastballs follow a Normal distribution with mean μ = 92 mph and a standard deviation of σ = 2…

A:

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1,025 h with a…

A: Given: Mean: μ=1025 Standard deviation: σ=87 a. at least 950 h: Z=950-102587Z=-0.86…

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: GivenSample sizen=10Sample meanX=7.42Standard Deviations=1.3Population meanμ=11.52Null hypothesis…

Q: A cement manufacturer claims that the average weight of his product is 40 kgs. with a standard…

A: Given: n= 45.0, x̄= 38.71 ,s= 2.35 µ= 40.0, significance level(∝)= 0.01 define hypothesis;- Null…

Q: A manufacturing company wants to know if the product waste that they produce complies with the…

A: Given information Sample mean x̅ = 188 kg Population mean µ = 200 kg Sample size = 30 Standard…

Q: The birth weights for twins are normally distributed with a mean of 2353 grams and a standard…

A: Given that, Mean = 2353Standard deviation = 647

Q: of size 25, determine the mean and standard deviation of x.

A: here given ,  population mean and standard deviation are respectively 78 and 10 inches

Q: A livestock company reports that the mean weight of a group of young steers is 1119 pounds with a…

A: Given: μ = 1119 σ = 81 Formula Used; Z-score = X-μσ

Q: A recent study found that 61 children who watched a commercial for potato chips featuring a…

A: Denote μ1, μ2 as the population mean weights of potato chips eaten by children who watched the​…

Q: One of the ways in which doctors try to determine how long a single dose of pain reliever will…

A: According to the given question, A report of the National Institutes of Health states that the…

Q: On a standardized exam, the scores are normally distributed with a mean of 170 and a standard…

A: We have to find z score..

Q: A traffic study of 1,600 vehicles that passed by a checkpoint showed that their speeds were normally…

A: Note- Since both are different questions, so according to our policy we can answer only one…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A:

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: Solution: State the hypotheses. Null hypothesis: That is, the mean amount of summer rainfall for…

Q: A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample…

A: Given that  Claim :  Mean tuna consumption by a person is 3.6 pounds per year Sample size (n) = 90…

Q: A sample of n = 25 scores has a mean of M = 83 and a standard deviation of s = 15.   Explain what is…

A: In this case, the sample size is n = 25, the sample mean is M = 83 and the sample standard deviation…

Q: A hospital wants to be 95% confident that its error is less than two hours in estimating the average…

A: Here given margin of error less than 2 hour Confidence level = 95%

Q: An instructor gives his class an achievement test which, as he knows from years of experience,…

A:

Q: A company responsible for making gumballs found that their gumballs had an average diameter of 2.21…

A: The given graph is the normalised distribution where mid line is the mean.  First left and right…

Q: The monthly income from a particular occupation is normally distributed, with a mean of 5000 dollars…

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: Q2) A certain machine makes electrical resistors having a mean resistance of 60 ohms and a standard…

A: Given information: μ=60, σ=2

Q: The selling price of a new car is normally distributed with an average of $19110 and a standard…

A: Let X denotes a selling price of a new car. Here, X follows normal distribution with mean value of…

Q: A nurse at a local hospital is interested in estimating the birth weight of infants. How large a…

A: The following information has been provided: α=0.02,E=4,σ=5\alpha = 0.02, E = 4, \sigma = 5…

Q: A survey indicates that the customers of a local supermarket spend an average of 45 minutes shopping…

A: The customer of local supermarket spend an average of 45 minutes for shopping. The standard…