A study about the level of happiness is done among SHS students. The scores follow a normal distribution between 1 to 5, which 5 is being the highest. If the population mean is 3 with the standard deviation of 1.7, what is the probabiltiy that the mean level of happiness of 31 students is higher than A 3% B 6% 0.06% 0.03%

Q: In an election a voter may vote for any number of candidates not greater than the Example 42. number…

A:

Q: Example 52. A committee consisting of 5 members is to be formed out of 6 men and 4 women. How many…

A:

Q: Suppose a researcher is surveying four subjects: subject A, subject B, subject C, and subject D.…

A:

Q: Which distribution can be fully described by its expected value and standard deviation? O…

A: The normal distribution is fully described by its expected value and standard deviation.

Q: What is the probability that 3 heart cards can be drawn in succession from a deck of 52 cards?

A:

Q: If P(A | B) = 0.3, compute P(A and B).

A:

Q: Which test statistic will be used if the sample is 37? a. t-test b. z-test c. population mean d.…

A: We have given that,  Which test statistic will be used if the sample is 37? Here, sample size (n) =…

Q: If X1, X2,..., X, constitute a random sample of size from a population given by 2(0 – x) for 0 <x <0…

A:

Q: What is the mean (¯xx¯) of this data set? mean = (Please show your answer to one decimal place.)…

A: given data : 93,32,100,28,82,93,30,72,84,63

Q: O a. u and σ O b. o and p c. p and u O d. pand p

A: The normal distribution is given.

Q: a) The IQR is a measure of spread of the 50% of a set of data. b) In a set of data that contains 250…

A: Solution-: (a) The IQR is measure of spread of the .....50% of a set of data. (b) In a set of data…

Q: newsgroup is interested in constructing a 99% confidence interval for the proportion of all…

A:

Q: Statement 1: Internal validity is the extent to which a study establishes a trustworthy…

A: The given question contains a discussion about Internal Validity and External Validity.

Q: Which of the following defines the area encompassed by the values not included in the non-rejection…

A: Here's, given the area of rejection or non rejection and tail of the distribution.

Q: A survey shows that in one year, the average number of bilingual employees in an office was 42.…

A: Given Mean=42 Standard deviations=12

Q: 3. Compute the population própol confidence level. J. p = 0.40,95% confidence, n=200 p. p = 0.23,…

A: a.n=200p^=0.40α=0.05The critical value is zc=1.96     (from statistical table)The 95% confidence…

Q: an educator, would like to investigate whether students’ IQ have an effect on their exam scores. She…

A: Hypothesis Testing: Hypothesis testing is a systematic approach for employing statistics to analyze…

Q: Suppose that the proportions of blood phenotypes in a particular population are as follows: A АВ…

A: Consider that the phenotypes of two randomly selected individuals are independent of one another The…

Q: If applicable, use the appropriate test to determine the average nicotine content which differs. In…

A: Given data is: Keto Diet Gym No exercise Intermittent 9 11 11.5 13.25 9.5 10 12 11.5 8.25…

Q: Weights of packages shipped by a company are normally distributed with a mean of 32.8 lbs. and a…

A: Given,mean(μ)=32.8standard deviation(σ)=5.4

Q: (4) If two random processes X(1) and Y(t) are statistically independent and are atleast wide sense…

A:

Q: АCTIVITY A. Complete the table below for the summary of critical values and draw its respective…

A: Two tailed test has critical value distribution on both the right and left sided of the curve. It…

Q: A  typical math class gets assigned 16 questions a week and was noticed to have a average of 18…

A: Given that, 16 questions were assigned a week in a typical class and was observed to have an…

Q: 19. Hospital Noise Levels Noise levels at various area urban hospitals were measured in decibels.…

A: given;sample size(n)=84sample mean(x¯)=61.2 decibelsand population standard deviation(σ)=7.9for…

Q: A leader of an association of jeepney driver claims that the average daily take-home pay of all…

A: Given Claims that  the average daily take-home pay of all jeepney drivers in Caloocan is ₱350.00.…

Q: If the computed value is greater than the critical value, then we ______________. a. retain the…

A: Here's, when we have computed value is greater them the critical value.

Q: YAn a survey of 458 random households, people take pride in discussing hen methods of environmental…

A: The provided information is n=458x=236α=0.05p^=xn=236458p^=0.515 The critical value is zc=1.96…

Q: Historical data indicates that WI Airlines receives an average of 1.9 complaints per day. (i) What…

A:

Q: Catherine is a junior reporter. As part of an investigation into consumer affairs she purchases 0.5…

A: From the provided information, The number of observations (n) = 12

Q: 1) Speeds of vehicles at a certain highway location are normally distributed with a mean of 66.4 and…

A: Given 1)mean=66.4 Standard deviation=8.8 Given  2)ME=1.5% P=0.32 q=0.68

Q: A biased coin has probability p to land heads and q = 1- p to land tails. (a) The coin is flipped…

A:

Q: The t-value (t - score) that would be used to construct a 99% confidence interval given a sample…

A:

Q: If the length of the American Black bears is normally distributed with mean 142.9 cm and standard…

A: According to our policy we can answer only first question for remaining please repost the question.

Q: Compute the z score value for a score of 85 on a test which has a mean of 75 and a standard…

A: Given:  Random score x with mean mu=75 and standard deviations σ=5  To find Z score of random score…

Q: 374 is 22% of the sample size. Find n

A:

Q: Discuss and interpret the relation strength and direction indicated by this statistic. Test your…

A: Given sample data represents the self-reported height and weight of female participants.

Q: You are examining the data with a stem-and-leaf plot. Here is the start of the plot. Finish the…

A: The provided data are ascending order…

Q: 18. Troy's Tire Mart has a replacement value of $965, 000 and is insured for $588, 000, with an 80%…

A:

Q: b) A mining company runs copper mines with various levels of fertility, where the profits per tonne…

A: Given the data of Profit per ton of Annual copper extracted ($) and Annual Tons of Copper Extracted…

Q: On the SAT exam, a total of 25 minutes is allotted for students to answer 20 math questions without…

A: Test is that whether the true mean amount of time needed for all students of this school to complete…

Q: 18. Troy's Tire Mart has a replacement value of $965, 000 and is insured for $588, 000, with an 80%…

A:

Q: Name: Date: Year and Section: Directions: Answer the following questions below. 1. Although there is…

A: Disclaimer: “Since you have posted a question with multiple sub-parts, we will solve first three…

Q: The table presents gasoline mileage performance for 25 automobiles (Source: Motor Trend, 1975). Y X1…

A: Given Information: Consider the given data: Y X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 18.9 350 165…

Q: The IQ scores of 50 students are given below.   106 118 90 97 108 91 105 85 89 105 92 108 112 105…

A: We use 85-89 for the first class and use the same width for each subsequent class.

Q: Compute the Pvalue for a random sample with n= 23, s = 2.33, and & = 15.5 for the test Ho: H =…

A:

Q: A joint density is given as Sx(y+1.5) 0<x<1 and 0<y<1 fx.x(x,y) elsewhere Find all the joint moments…

A:

Q: Seventy percent of adults in a certain country are vaccinated. A random sample of 2100 adults from…

A:

Q: sample of 50 laptops, the sample mean is 122 minutes. Test this hypothesis with the alternative…

A:

Q: A dataset shows the number of capital letters that a student can write in 15 seconds using the non-…

A: Given that

Q: 1. When we decide to reject the null hypothesis, the probability of committing a Type l error will…

A: Introduction: It is required to identify each statement as true or false.