If you have a wooden board that is 0.75 meters wide, how long should you cut it such that the golden ratio is observed,

Q: A group of scientific men reported 1,705 sons and 1,527 daughters. Do these figures conform to the…

A: Introduction Form the above data we have to show the hypothesis. As the sex ratio is 1/2 given

Q: Suppose I interview a random sample of 300 adults and ask them to assess their health, from “Poor”…

A:

Q: The men hired by a certain city police department must be at least 69 inches tall. If the heights of…

A: Given μ=70 inches and σ=2 inches We need to find, Z=X-μσ=69-702=-12=-0.5 Now to find the required…

Q: A research report from an independent-measures study states that there are significant differences…

A: The degrees of freedom for treatment (k-1) is 3.

Q: The average dividend declared by a group of 10 chemical companies was 18 per  cent. Later on it was…

A: Given that  Incorrect Mean = MI = 18 Number of observation = n = 10 Correct figure = XC = 12…

Q: At a local university, English instructors are supposed to grade essays in a class so that the…

A: Given,   Sample size = 22 Sample mean = 79.1 Sample standard deviation = 6.5

Q: If my p-value is 0.062 should I reject it and support my claim?

A: Basic: Rejection or acceptance of null hypothesis  is totally depending  on p values and…

Q: I want a 99% confidence within 2% for the true proportion of bald people in the US.  How many people…

A: Given that, Margin of error E=0.02 Confidence level is 99% Critical value: The two tailed z critical…

Q: Suppose a senator finds that 45% of the United States voters are in favor of abolishing the…

A: z=critical value of 95% confidence interval=inverse normal of 0.95=1.96p=proportion=…

Q: In fall 2014, 34% of applicants with a Math SAT of 700 or more were admitted by a certain…

A: Let x be a total number of applicants with a Math SAT score.Then, it is given that 32% of x had a…

Q: If a researcher measures two individuals on a ratio scale, then it is impossible to determine how…

A: Ratio scale is a form of quantitative variable measurement scale. Ratio scale makes it possible for…

Q: ate the proportion of households with two cars. How large a sample is needed in order to be 95%…

A: Following information is given: Confidence level = 95% Prior estimate of population proportion = 40%…

Q: In October 2017, the Gallup Poll asked a sample of 10281028 U.S. adults, "Are you in favor of the…

A: Given, n=1028 Consider that the population standard deviation is σ, the level of significance is α.…

Q: If 2% of the components produced by a machine are defective, what is the average number of defective…

A:

Q: A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3. If these scores are placed…

A: Given: Lowest value of X = 3 Highest value of X = 11

Q: A population has a stand. dev. of 24. on average, how much difference should there be between the…

A:

Q: According to a recent report, 21% of all adults routinely skip breakfast. A researcher believes this…

A:

Q: What is the greatest possible error of a measurement taken to the nearest tenth of a meter?

A: What is the greatest possible error of a measurement taken to the nearest tenth of a meter?

Q: scallop-shaped wings and 67 have normal wings. Results were similar for reciprocal crosses. have…

A: Given, 87 of the offspring have scalloped wings and 90 have normal wings. If they cross flies with…

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: From the given information, There are 50 people and 12 people in the sample are over six feet tall.…

Q: 7) A researcher at a major hospital wishes to estimate the proportion of the adult population of the…

A: Given that, Critical value: Using the z-table, the critical value at 99% confidence level is

Q: What evidences suggests that the golden ratio and golden rectangle hold particular balance as well…

A: The golden ratio is the ratio of the larger quantity and smaller quantity. If a and b be the larger…

Q: Suppose that the results of a survey show that 46% of people consider summer as their favorite…

A: The following information is available in the question

Q: A certain test is worth 125 points. How many points (rounded to the nearest point) are needed to…

A: Test of worth=125 pointneeded=75 %

Q: an IQ higher than 90% of the population was obtained by taking the webchers IQ test, what is the IQ…

A: Given: Population mean IQ score using Stanford Binet intelligence test μ = 100 Population standard…

Q: If your study consists of four groups, each with 15 subjects, and SSpet = 42 and SSw = 35, what does…

A: Number of groups, k = 4 Number of observations, N = 60 SSbet = 42 and SSw = 35

Q: According to the Pew Research Center, the proportion of the American population who use only a…

A: Given that n = 30 x = 16 α=0.10Given claim : proportion greater than 0.37The claim is either the…

Q: If the average (arithmetic mean) of n consecutive integers is 12, what is the value of the least of…

A: The arithmetic mean of n consecutive integers is 12 To find the value of least integer.

Q: a) Mr. Kashif got an average of 50 in 6 tests. What should he get in the next test to obtain the…

A:

Q: Suppose you have a piece of wire of length 18 inches, where will you cut the wire in order to…

A: The length of the piece of wire is 18 inches.

Q: A calibration study needs to be conducted to see if the readings on 15 test machines are giving…

A: Given : Total Machines = 15 We have to select 5 out 15

Q: In a survey at a local university 52% of students say that they less than the recommended eight…

A: The problem concerns working out the percentages and interpreting .

Q: On a test, Tarina missed 8 out of 52 questions. What is the ratio of correct to incorrect answers on…

A: Given that:  Total number of questions on test= 52  Number of missed questions = 8 Find the ratio of…

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: Obtain the proportion of oil tankers that had spills. The proportion of oil tankers that had spills…

Q: A scientist studied the spread of AIDS and concluded that 24% of people contracted the disease.…

A: A scientist concluded in a test that 24% of people contracted in the disease. The scientist was…

Q: Consider the case where the predetermined average number of bus arrivals at the Cubao Station is 6…

A: As given, the average number of bus arrivals at the Cubao Station is 6 per 15-minute period. Let λ…

Q: A chi-square test is conducted to determine if a standard 6-sided die is weighted. If the die is to…

A: A standard 6 sided die is tossed randomly.

Q: State the generic error for an interpolating formula?

A:

Q: A random sample of 100 students at a high school was asked whether they would ask their father or…

A: H0: p1 = p2H1: p1 ≠ p2

Q: In a Gallup poll of 1236 adult respondents, 6% said that bad luck follows breaking a mirror. That…

A: The margin of error expresses the amount of the random variation underlying a survey's results

Q: A survey found that in a sample of 100 families, 37 owned cats. A survey done 5 years ago found that…

A:

Q: Suppose that the results of a survey show that 40% of people consider summer as their favorite…

A: Given Data: Let 'n' be sample size p^=0.4 Margin of error=0.04   Assuming level of significance to…

Q: On average, a sample of n = 36 scores will provide a better estimate of the population mean than a…

A: We have to identify trueness of statement.

Q: a report about an isolated community claims there are more newborn females than males although we…

A: The given claim is that there are more newborn females than males.Let p1 and p2 be the sample…

Q: A researcher at a major clinic wishes to estimate the proportion of the adult population of the…

A: Given that, If the prior information is unknown, assume that the sample proportion is, p^=0.50…

Q: The length of a fully grown hibiscus plant is normally distributed and has a mean 35cm. It is found…

A: Given information: μ=35, σ=? x = 45 Px>45=0.05

Q: How many hands of 5 playing cards (from a standard deck) contain exactly one pair of cards of equal…

A: We have to determine the number of hands of 5 playing cards containing exactly one pair of cards of…