From a basket of fruits 75 apples and 29 oranges are drawn. Do these figures confirm the hypothesis that proportion of oranges in the başket is 1/3rd ?

Q: The researcher claims that the proportion of birth count in four quarters are equal. Th observed…

A: Null Hypothesis: H0: The proportion of birth count in four quarters are equal. Alternative…

Q: Interpret the odds ratio for each variable: Age (0 for 10 years or under, and 1 otherwise): the odds…

A: Given information: The odds ratio’s for each of the three variables Age, Sex and BMI is given.

Q: An epidemiologist is worried about the prevalence of the flu in East Vancouver and area. She will…

A: The smapleproprotion is caculated as: p = x/n=36/330 =0.1091   At a 95% confidence level, the z…

Q: Do heavier cars really use more gasoline? Suppose a car is chosen at random. Let x be the weight of…

A: Given data and calculation is shown below x y x2 y2 xy 29 30 841 900 870 44 19 1936 361 836…

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: (d) The probability that a randomly selected hybrid gets less than 45 miles per gallon is (Round to…

A: X follows a Normal distribution with mean = 57 and S.D = 3.5 Then z=(x-mean)/SD = (x-57)/3.5…

Q: A recent poll of 800 people who work indoors found that 208 of them smoke. If the researchers wnat…

A: The sample proportion can be calculated as: p=x/n=208/800=0.26 At a 98% confidence level, the z…

Q: The correct size of a nickel is 21.21 millimeters. Based on that, the data can be summarized into…

A: From the provided information, The total children = 35 The total children from the low-income group…

Q: The U.S. Air Force requires that pilots have heights between 64in and 77in. The heights of women are…

A: Obtain the percentage of woman meeting the height requirement. The percentage of woman meeting the…

Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population?

A: It is given that the mean is 8 and sum of X is 40.

Q: Out of 1000 residents of Eagle County surveyed, 590 of them feel that their children receive a good…

A: There are two independent samples which are Eagle County and Beaver County. We have to construct 95%…

Q: Assuming that workers' salaries in your company are uniformly distributed between $30,000 and…

A:

Q: A stick of unit length is broken into two pieces. Find the expected ratio of the length of the…

A:

Q: An agricultural researcher wishes to see if a kelp extract prevents frost damage on tomato plants.…

A: Since p1 and p2 denote proportion of damaged crop from kelp and no kelp group respectively, hence…

Q: A sample with M=8 has EX=56. How many scores are in the sample?

A:

Q: The correct size of a nickel is 21.21 millimeters. Based on that, the data can be summarized into…

A: Given: Total children = 35 Total children from the low-income group that drew the nickel too large =…

Q: Diastolic blood pressure in adults is normally distributed with m = 80 mm Hg and s = 12 mm Hg. In a…

A: The probability that diastolic blood pressure below 70 mm Hg is,

Q: A researcher reports an F ratio with df=2,27 from an independent measures research study. How many…

A: The degree of freedom for F ratio is (k-1, N-k), where k is the number of treatment conditions and…

Q: . A population with a mean of 10 has EX 250.How many scores are in the population?

A: Note: Hey there! Thank you for posting the question. For calculating number of scores in the…

Q: Consider a dice with the property that the probability of a face with n dots showing up is…

A: Introduction : Given , A dice , prob.(a face with n dots showing up) is proportional to n.hence, we…

Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 68.8 bpm. For a random…

A: Given that  Claim : The mean pulse rate of adult males is equal to 68.8 bpm. Sample size (n) = 144…

Q: It is important that face masks used by firefighters be able to withstand high temperatures because…

A: Given, Let the true population of masks used by firefighters whose lenses pop out of 250 be denoted…

Q: When estimating the true proportion, how large a sample is needed to be 95% confident that the error…

A: It is given that Margin of error E = 0.06 Level of confidence = 0.95 The critical value of Z at 95%…

Q: In a random sample of 80 Americans, 45 wished that they were rich. In a random sample of 90…

A:

Q: 6. Suppose the initial height from which a rubber ball drops is 100 in. The rebound heights to the…

A:

Q: For a z-score of Z = -2.2, give the proportion in the body (hint: use the z-table), and state…

A:

Q: If a person is making the third quartile salary for a CPA, they are making less than 50 V o 50 % of…

A: It is a graph that shows five number summaries of the data. Minimum, first quartile, median, third…

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: How long is the median relating to the 10 cm side in a triangle with sides of 6, 7 and 10 cm?

A: The Median is approximately 5.91

Q: It was recently estimated that uninsured vehicles outnumber insured ones by about seven to six. If…

A: as per information : uninsured vehiclesinsured vehicles=76 assume  No of uninsured vehicles=7x No of…

Q: (Given that ( A ) = ( B ) = ( C )=5· and 80% of A's are B's, 75% of A’s are C's, find the litits of…

A: The population can be divided into two categories based on the presence or absence of attribute. If…

Q: Given a 95% C.I. = (34.14 mm, 36.02 mm) for a sample of Wooly Bear caterpillar lengths (preceding…

A: The 95% confidence interval is (34.14 mm, 36.03 mm).

Q: eviclara rs has declined in 1%, and the use of 7% to 20.4%. A ity indicated that 54 urvey. At the a…

A:

Q: 1. Use the results of the simulation to approximate the margin of error for Javier's estimate of the…

A: Here we have to calculate margin of error Assuming the confidence Interval = 95% Sample Size  = 500…

Q: A student at Tolland High School wondered if boys or girls at her school traveled a greater distance…

A: Given: Sample size for girls = 50 Sample size for boys = 50 The concern is to check the average…

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: The weights of radish seeds are normally distributed, with µ = 0.12 g and σ = 0.02 g.    -What is…

A: Given data, µ = 0.12 g σ = 0.02 g

Q: A population with a mean of u = 8 has EX 40. How many scores are in the population?

A: From the provided information, Mean (µ) = 8 ∑X = 40

Q: If a coin is flipped 225 times and the number of Hs is 75. Compute the proportion of Hs. Round to…

A:

Q: As shown in the table, the average number of siblings (sibs) for 1018 middle class adults is 3.15.…

A: Introduction: It is required to determine if the middle class of the country come from smaller…

Q: 1. What percentage of scores fell within ±1 SD for ZADHD?

A: Introduction: The "ZADHD" values indicate the z-scores of ADHD.

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

A:

Q: a. How many of the 125 people had resting pulse rates of more than 100? b. What percentage of people…

A: a. There are totally 125 people who had resting pulse rates. Count the number of dots that are above…

Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population? %3D

A: Given information- Mean, µ = 8 ⅀X = 40 We have to find how many scores are in the population. Let, N…

Q: Two sides of triangle were measured as 150mm and 200mm and the included angle as 600 . Determine…

A:

Q: It was recently estimated that uninsured vehicles outnumber insured ones by about 7 to 6. If there…

A: Given that uninsured vehicles outnumber insured ones by 7 to 6

Q: A city has 100200 women aged 15-49 and 40896 children under age 5. The Child woman ratio is O a. 480…

A: Given, No of women aged 15-49 n = 100200 No of children under age 5 x = 40896

Q: From a population of 10,000 individuals of a certain town, what sample size is needed in order to…

A: Yamane's formula can be used to determine the minimum sample size required for the study with…

Q: A poll summarized the results of a survey of 2,400 adults and 500 teens aged 13 to 17. It was…

A: Confidence interval explains the range where the true parameter lies. It is calculated by the…