Translate 69±19into interval notation.

Q: How can I do the first two questions using excel? I just guessed on the first one.

A: Given: 1, 2, 4, 5, 8, 10  

Q: Dylan Jones kept careful records of the fuel efficiency of his new car. After the first nine times h...

A: Given, The mean was 25.7 miles per gallon (mpg) with a sample standard deviation of 0.9 mpg. xbar = ...

Q: Find the probability that none of the households are tuned to Found?

A:

Q: For a standard normal distribution, find the probability that a value is greater than 1.2 standard d...

A: Obtain the probability that a value is greater than 1.2 standard deviations above the mean. The prob...

Q: In a random sample of 500 Americans, 50% indicated that they have a cat for a pet. Estimate with 95%...

A: Given information

Q: The 30 students in MATH215A are invited to play “My Deal or NO DEAL!!” Each student will get toselec...

A: Given :  The 30 students in MATH215A are invited to play “My Deal or NO DEAL!!” Each student will ge...

Q: Suppose a researcher wants to estimate the population proportion of defective light bulbs. He took a...

A: Sample proportion: p^=xn=40800=0.05  

Q: A sample of n = 9 subjects Each subject was tested on a series of 100 cards Number Correct for each ...

A: Given n=9 sample points: 18,23,24,22,19,28,15,26,25 μ=20α=0.05    

Q: Remaining Time: 1 hour, 24 minutes, 28 seconds. * Question Completion Status: 6. 8. 9. 10 Quèstión 7...

A: The formula of the sample proportion is,   Point estimate: The population parameter which is estima...

Q: A paint manufacturer uses a machine to fill gallon cans with paint (1 gal = 128 ounces). The manufac...

A:

Q: 1.8.9. Let f(x) = 2x, 0<x < 1, zero elsewhere, be the pdf of X. (a) Compute E(1/X). (b) Find the cdf...

A:

Q: A researcher studies the effect of cognitive psychotherapy on positive self-regard. The number of po...

A: Here it is given that, the number of positive statements - Before Treatment: 7, 6, 9, 5  So, mean (μ...

Q: Find the indicated z-score shown in the graph to the right. Area = 0.0244 z=? The z-score is. Round ...

A:

Q: Two groups of aged rats are studied: those with moderate memory loss and severe memory loss.  Modera...

A: The hypotheses are given below: Null hypothesis: H0:µ1-µ2=0 Alternative hypothesis: H1:µ1-µ2≠0 Decis...

Q: Calculate the variance and standard deviation for the following sample of scores: 7, 2, 4, 6, 4, 7, ...

A: Here the given samples - 7, 2, 4, 6, 4, 7, 3, 7 Sample mean (x¯) = 7+ 2+ 4+ 6+ 4+ 7+ 3+ 78= 5

Q: Suppose that, for a particular type of cancer, chemotherapy provides a 5-year survival rate of 80% i...

A:

Q: In a test of the effectiveness of garlic for lowering​ cholesterol, 36 subjects were treated with ra...

A: Hypothesis to be tested: H0​: μ=0  H1​: μ&gt;0 ​  

Q: Which of the following scenario is an example of a matched-pairs design? Group of answer choices co...

A: In matched pair design the same subjects are observed under two different conditions.

Q: How many rounds of golf do those physicians who play golf play per year? A survey of 12 physicians r...

A: Given : n = 12 X¯ = ∑Xin X¯ = 22.83 σ = 6 Here population standard deviation is known hence we can u...

Q: A researcher is measuring class as an income variable [not ideal, but...]. The variable is the amoun...

A: Ordinal data or "ordered data" that establishes a relative rank to categorical variables. Ordinal da...

Q: A survey about monthly cell phone service costs was given to 49 randomly selected Americans aged 2...

A: Given data of a survey about monthly cell phone service costs of 40 selected Americans aged 25-64. T...

Q: Suppose that in a certain region of the country the mean duration of first marriages that end in div...

A: From the given information, let X be the age of marriages. Number of divorces considered in the samp...

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96 and a standard dev...

A: Given information Normal Distribution N(96,19.3) mean (µ) = 96 standard deviation (σ) = 19.3 X follo...

Q: Dylan Jones kept careful records of the fuel efficiency of his new car. After the first nine times h...

A: Given information Sample size(n) = 9 Sample mean = 25.7 mpg Sample standard deviation = 0.9 mpg Sign...

Q: Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 0. 1 3 4 Pro...

A: 0 0.642 0 0 0 1 0.223 0.223 1 0.223 2 0.087 0.174 4 0.348 3 0.026 0.078 9 0.234 4 0.014 0.05...

Q: The average monthly grocery bill for an individual is normally distributed with a mean of $85 and a ...

A: Solution: Let X be the average monthly grocery bill for an individual is normally distributed with m...

Q: In the western United States, there are many dry land wheat farms that depend on winter snow and spr...

A: The value of P(6 ≤ r|4 ≤ r) is obtained as shown below: From the information, number of good wheat c...

Q: Find the standard deviation, s, of sample data summarized in the frequency distribution table below ...

A: The required valued calculations are tabulated below: Here, X represents the class midpoint, f repre...

Q: Being the entrepreneur that I am, I have started a business selling students email and physical addr...

A: Given, n =25 p = 0.22 q = 1 - p = 0.78 x = 5

Q: ***PLS ANSWER ONLY ITEMS IN BOLD  &amp; ENSURE ITS CLEAR PLS AS I HAVE TROUBLE READING IMAGES*** Par...

A:

Q: 50% of students in a class are social science majors and the rest are not. 70% of the social science...

A:

Q: (Sec. 5.4) Young's modulus is a quantitative measure of the stiffness of an elastic material. Suppos...

A: Given information- Population mean, µ = 68 GPa Population standard deviation, σ = 1.5 GPa  

Q: identify the null and alternative hypothesis, find the critical value and identify the rejection reg...

A: The observed value (Oi) is:   Rural Urban Suburban Total Favor 18 45 33 96 ...

Q: A manufacturer of light bulbs may want to be reasonably certain that less than 3% of the bulbs are d...

A: Given Information: Sample size (n) = 300 10 defective bulbs are found. Hypothesized value (p0) = 3% ...

Q: Suppose  N = 20  and  r = 4.  What is the probability of  x = 3  for  n = 15?  (Round your answer to...

A: Given information N = 20 r = 4   Here X follows Hyper Geometric distribution and its PMF is given be...

Q: A local county has an unemployment rate of 6.1%. A random sample of 20 employable people are picked ...

A: Probability that unemployment = 6.1% = 0.061 Sample size, n = 20

Q: A paint manufacturer uses a machine to fill gallon cans with paint (1 gal = 128 ounces). The manufac...

A:

Q: How do you calculate the Z?     c) Z is the manufacturing cost per unit. Given, Z=X+Y, then X Y Z...

A: Note: Thank you for the question. Since the question is not clear to us, we have made calculations u...

Q: Suppose that the weight of an newborn fawn is Uniformly distributed between 2.2 and 3.8 kg. Suppose ...

A: Uniform Distribution A random variable x is said to be following uniform distribution with parameter...

Q: Let the random variable X represent the profit made on a randomly selected day by a certain store. A...

A: Given μ=360 and σ=50       The z-score is calculated asz=x-μσ

Q: It is believed that the mean number of chronic conditions amongst the elderly is 1.75. Aphysician ra...

A: Parameter: The statistical measure that describes the features of the population is termed as a para...

Q: You may need to use the appropriate appendix table to answer this question. The time needed to compl...

A:

Q: To find the impact of students working while enrolled in classes, a researcher carried out a survey ...

A: A statistic is the estimator of a particular parameter of the population.For eg. The sample mean is ...

Q: Suppose that we have a sample space with five equally likely experimental outcomes:  E1, E2, E3, E4,...

A: [NOTE : Since you have posted a question with multiple subparts, we will solve the first three subpa...

Q: A bottling company produces bottles that hold 10 ounces of liquid. Periodically, the company gets co...

A: Given Information: Sample size (n) = 22 bottles Sample mean (x¯) = 9.7 ounces Sample standard deviat...

Q: Assume that a sample is used to estimate a population mean μμ. Find the margin of error (M.O.E.) tha...

A: Given that : A sample of size (n) = 18 Mean of sample of size (µ) = 18 Standard deviation ( σ )  = 1...

Q: The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.7 a...

A: The areas under the standard normal curve for different values of z are available in statistical tab...

Q: Please show work and formula, I need help with number 4, 6, and 7 A random sample of 25 frozen dinne...

A: