The mean operating temperature of a heat sensing device is claimed to be 190 "F.A simple random sample of 16 devices has mean195 F and standard deviation 8 F. Can it be concluded at the 0.01 level of significance that the mean operating temperature is higher than 190 F.

Q: A random sample of 40 adult males was taken, and their red blood cell counts were measured million…

A: a) From the given information, n=40x¯=4.932s=0.504 Null Hypothesis: H0:μ=5 Alternative Hypothesis:…

Q: In one region of the Caribbean Sea, daily water temperatures are normally distributed with a mean of…

A: It is given that the mean is 77.9 and standard deviation is 2.4.

Q: A normal white blood count is assumed to be approximately 8 (thousands) cell per cc of blood. A…

A: The provided information are: Sample size (n) = 15Population standard deviation σ=0.872Sample…

Q: The phenol concentration of wastewater was detemined from three (3) parallel determinations, giving…

A: Null hypothesis:   H0: µ=0.520   That is, the mean reference value is not statistically significant.…

Q: The waist girth of 2,500 employees in a large company follows the normal distribution with mean of…

A:

Q: assume that the mean weight of 1 year-old girls in the Philippines is normally distributed with a…

A: Let X denotes the weight of 1 year-old girls in the Philippines which follows normal distribution…

Q: The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the djameters…

A:

Q: In an all boys school, the heights of the student body are normally distributed with a mean of 69…

A: By empirical rule, Approximately 68% of the data values lie within 1 standard deviation on each…

Q: The average salary in this city is $43,900. Is the average different for single people? 61 randomly…

A:

Q: it is claimed that personal vehicle is driven 24500 km per year. would you agree with this claim if…

A:

Q: The mean serum-creatinine level measured in 12 patients 24 hours after they received a newly…

A: Note:  As per the company guidelines only 3 subparts can be answered.  Kindly, resubmit the question…

Q: A company claims that, the mean battery life of their cell phone is at least 5 hours and standard…

A: Given,sample size(n)=25sample mean(x¯)=4.8standard deviation(σ)=0.5α=0.04H0:μ<5H1:μ≥5

Q: A hospital administrator believes that the standard deviation of the number of people using…

A:

Q: If the manager of a bottled water distributor wants to estimate, with 95% confidence , the mean…

A:

Q: The weight of oranges growing in an orchard is normally distributed with a mean weight of 7 oz. and…

A:

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given Information: The distribution of number of daily requests is bell shaped and has a mean of 55…

Q: A 7,000-seat theater is interested in determining whether there is a difference in attendance…

A: Here Given  FOR TUESDAY EVENING Sample size=n1=33 Sample mean= 5490=X1 Population SD=610=σ1   Now…

Q: The average weekly earnings of bus drivers in a city are $950 with a standard deviation of $45.…

A: The formula for calculating the standard error of the sample is,

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A:

Q: The average farm size in the United States is 444 acres. A random sample of 40 farms in Oregon…

A: Given :  μ = 444 σ = 52 x¯ = 430 n = 40 α = 0.05 Hypothesis : H0 : μ = 444 H1 : μ ≠ 444

Q: It was found that the mean length of 100 parts produced by a lathe was 20.05 mm with a standard…

A: Given: . The z-score is calculated as

Q: The altitude of a spot is mentioned on map as 295 m. The success rate of a missile launched from…

A: From the provided information, Sample size (n) = 50 Sample mean (x̄) = 297.6 Standard deviation (s)…

Q: It has been reported that the mean score for a student who takes the certain test is 80 with the…

A: Given mean = 80 standard deviation, σ = 9 sample size, n = 100

Q: A travel analyst claims that the mean room rates at a three-star hotel in Chicago is greater than…

A: Given dataSample size = 36Sample mean = 163Hypothesized mean = 152Population standard deviation =…

Q: a life time of a certain brand of tires is approximately normally distributed with a mean of 42,500…

A: Given information- Population mean, µ = 42,500 miles Population standard deviation, σ = 3200 miles…

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103103 and a standard…

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

Q: The distribution of average hours of sleep per weeknight among college students is found to be…

A:

Q: The heights of English men are normally distributed with a mean of 69.2 inches and a standard…

A: given mean  (μ= 69.2 )   standard deviation(σ)  = 4      z= (x-μ)/σ p(x<57.2) =P((x-μ)/σ  <…

Q: The police department of a U.S. city reported that the mean number (μ) of auto thefts per…

A:

Q: The owner of a factory that sells a particular brand of bottled fruit juice claims that the average…

A: ( 1 ) For the given data perform t test for one mean

Q: If the standard deviation of scores on the MCAT exam is 11.0, how large a sample is needed to…

A: The random variable score follows normal distribution. We have to find the sample size.

Q: Consider babies born in the "normal" range of 37-43 weeks gestational age. Extensive data support…

A: The standard normal variable Z is defined as, Z = (X – µ)/σ, where µ is the mean of the random…

Q: The manufacturer of a battery claims that the mean life of it is 8 months. An agency took a sample…

A:

Q: The lifespan of lightbulbs is normally distributed with a mean of 300 days and standard deviation of…

A: From the provided information, Mean (µ) = 300 Standard deviation (σ) = 50 X~N (300, 50) X is random…

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

A: The z-score formula is, z=x-μσ In the formula, x be the random variable, μ be the population mean,…

Q: A random sample of 100 pumpkins is obtained and the mean circumferenceis found to be 40.5 cm and…

A: From the provided information, The hypotheses can be constructed as follow: Null hypothesis: H0: µ =…

Q: A sample of 106 body temperatures was found to have a mean of 98.20and a standard deviation of 0.62.…

A: Given that, A sample of 106 body temperatures was found to have a mean of 98.20and a standard…

Q: A random sample of 100 pumpkins is obtained and the mean circumference is found to be 40.5 cm.…

A: The summary of statistics is, The type of test is two tailed test

Q: 1. The average height of a Filipino female is 151.8 cm with standard deviation of 6 cm. What is the…

A: As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please…

Q: In a city, it is estimated that the maximum temperature in June is normally distributed with a mean…

A: Given : Maximum temp. in June is normally distributed with  Mean (μ) = 28o S.D (σ) = 5.4o Let X be a…

Q: The mean score in miss smiths 4th grade class was 76, with a standard deviation of 7. Assume the…

A: Solution: Let X be the score in miss smiths 4thgrade class. From the given information, X follows…

Q: It is claimed that personal vehicle is driven 24500 km per year. Would you agree with this claim if…

A: Given data: Population mean = 24500 Sample size = 100 Sample mean = 28000 Sample standard deviation…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A: Given: According to the empirical rule, Therfore,

Q: The manufacturer of a certain brand of automobiles component claims that mean life of these…

A:

Q: Although the experimenter does not know it, the population mean for the treatment condition is 10,…

A: Type II error: Type II error is the failing to reject the null hypothesis when it is false.…

Q: According to an article in Good Housekeeping, a 128-lb woman who walks for 30 minutes four times a…

A: Given, Sample size = 35 Sample mean = 9.1 Sample standard deviation = 5   Set up the null and the…

Q: The physical plant at the main campus of a large state university recieves daily requests to replace…

A:

Q: A random sample of 100 two-month old babies is obtained, and the mean head circumference is found to…

A: Null hypothesis: The population mean is 40.0 cm. Alternative hypothesis: The population mean is not…

Q: A survey in San Diego was given and found that the mean commute time in 2014 was 26.5 minutes. A…

A: