H0:μ=22.355H0:μ=22.355 H1:μ≠22.355H1:μ≠22.355 Your sample consists of 26 subjects, with a mean of 22.2 and a sample standard deviation (s) of 1.09. Calculate the test statistic, rounded to 2 decimal places. t=

Q: standard deviation

A: We have not given the distribution consider the given distribution is Normal . We know the property…

Q: Heights of adult women are normally distributed with a mean of 64 inches with a standard deviation…

A: According to the given information, we have Mean = 64 inches Standard deviation = 2.5 inches

Q: The average weight of adult females is 166.3 pounds, with a standard deviation of 14 pounds and a…

A: According to the given information in this question We need to find the standardized score for…

Q: 2. According size in the United States is normally distributed with a mean µ = 2392 square feet and…

A:

Q: The life of a 9-volt battery is normally distributed with a mean of l = 2000 hours and a standard…

A:

Q: professor at a local university noted that the exam grades of her studer istributed with a mean of…

A: Given that.   X~N( μ , ?)   μ=68 , ?=17   Z-score =( x - μ )/?

Q: A survey of 15 large cities noted the average weekly commute times, in hours, of the residents of…

A: From the above data n=15∑x=64.10∑x2=289.23mean=x =∑xn                =64.1015  mean=x=4.273

Q: z-score Percentile z-score Percentile z-score Percentile -3.0 0.13 -2.0 2.28 -1.0 15.87 -2.9 0.19…

A: It is given that  Mean = 24.8 Standard deviation = 2.5 Z-Score, Z = ( X - μ )/σ

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: Is there a doctor in the house? A market research firm reported the mean annual earnings of all…

A: GivenMean(x)=192890sample size(n)=47standard deviation(s)=43117α=0.01

Q: The heights of women aged 20– 29 in the United States are approximately Normal with mean 64.2 inches…

A: The data for heights of both women and men are normally distributed. The mean is 64.2 inches and…

Q: distribution of the number of dill pickle spears in a gallon container is approximately normal with…

A:

Q: The weights for a group of 18-month-old girls are normally distributed with a mean of 24.7 pounds…

A: Mean = 24.7Standard deviation = 2.8Raw score = 29.3

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Introduction: Denote the random variable, Denote X as the number of hours of sleep on a weeknight.…

Q: A standardized test has a pop. mean of 152 and a standard deviation of 16. Molly scores at the 91st…

A:

Q: this data has a mean of 7.2 .  5, 7, 9, 10, 5 Calculate the sample standard deviation of this…

A: Central tendency measures the central value of the data set. Mean is a measure of central tendency.…

Q: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 2 1 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean…

A: Given: n=20 The table below shows the data. 0.5 0.25 1.4 1.5 0.85 0.2 1.5 1.75 0.1 0.65 0.75…

Q: ence fiction novels average 250 pages in length. T tribution of novel length is normal. The average…

A: Consider the given information.  The null and alternative hypotheses are, Ho: μ = 250 Ha: μ > 250…

Q: Body temperatures of healthy humans are distributed nearly normally with mean 98.2°F and standard…

A: Given Mean, μ=98.2SD, σ=0.73

Q: age, ed in 4 places by the time they are 18 years old. Is this average more for college students?…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

Q: Is there a doctor in the house? A market research firm reported the mean annual earnings of all…

A: Given

Q: The sodium content of a popular sports drink is listed as 220 mg in a 32-oz bottle. Analysis of 10…

A:

Q: Mechanical pencil lead is manufactured with a mean width of 0.9 mm. Because of variability in the…

A:

Q: A test has a mean score of 55 with a standard deviation of 12. Using the Empirical Rule determine…

A:

Q: Women’s heights are normally distributed with a mean of 63.7 in and a standard deviation of 2.9 in.…

A: X~N( μ , ?)   μ=63.7 , ?=2.9   Z-score =( x - μ )/?

Q: Calculate the sample standard deviation, s, for this set of data: 6.3, 6.7, 6.3, 3.6, 8.8, 5.0…

A: Given information: The data is given below. 6.3, 6.7, 6.3, 3.6, 8.8, 5.0 Sample size (n)=6   Find:…

Q: Australia, has an anverage daily rain fall of about 137 mm and the standard deviation is about 69…

A: The average rainfall is 137 mm. The standard deviation of rainfall is 69 mm. The rainfall is…

Q: What percent of athletes complete the course between 8 and 9 minutes?

A:

Q: A survey of 16 entergy drinks noted the caffeine concentration of each drink in milligrams per…

A: Mean: For a set of n observations, x1, x2, ... , xn mean is given by, Standard deviation: For a set…

Q: Pumpkins from a local farmer have a mean weight of 16 pounds with a standard deviation of 2.5…

A: Given information: It is given that, Pumpkins from a local farmer have a mean weight of µ = 16…

Q: the amount of pretzels dispensed into a 24 ounce bag by the machine has been identified as…

A: Define the random variable X as the amount of pretzels follows normal distribution with a mean of…

Q: The mean number of days that the Monarch Butterfly spends in its larval stage is 14.1 days, with a…

A: Mean = 14.1 Standard deviation = 2.2 Raw score = 12.7

Q: The marketing director of a large department store in Metro Manila wants to estimate the average…

A:

Q: You sample 55 night students, and the sample mean GPA is 2.14 with a standard deviation of 0.82 You…

A: The pooled variance is, sp2=n1-1s12+n2-1s22n1+n2-2=55-10.822+25-10.92255+25-2=56.623278=0.7259 The…

Q: Home prices in a city have mean = $194,000 and standard deviation = $20,000. For n = 25 randomly…

A: population mean ()=194000standard deviation()=20000sample size(n)=25Mean()=198000

Q: The population average for SAT scores is known to be 500 with a standard deviation of 100. This…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: The sample uric acid levels of selected basketball and tennis players of the same age and gender in…

A: Given data is appropriate for testing of hypothesis to test t-test for difference of means. because…

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

A: Answer:- Given that the adult men have heights with a mean (μ) =  69.0 inches.                a…

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.