In a certain town every telephone number consists of four digits, the first of which cannot be zero. How many different telephone numbers are possible.

Q: Differentiate the Type 1 and Type 2 Error in doing Hypothesis Testing.

A: We want to tell you type 1 error and type 2 error   

Q: In a continuous-time surplus model, the claim severity is distributed as PN(0.7). Determine the Lund...

A: We are given the following information as follows : Claim severity distributed as PN(0.7) Initial s...

Q: Okay there is a path diagram that shows the way the world is. (There are no other variables to co...

A: question:   Okay there is a path diagram that shows the way the world is. (There are no other varia...

Q: From a pack of 52 cards, three are drawn at random. Find the chance that they are a king, a queen an...

A:

Q: Calculate the interquartile range and percentile range of following distribution : Class Intervals :...

A:

Q: A car servicing station has 2 bays where service can be offered simultaneously. Because of space lim...

A:

Q: Testing: Но: р — 0.81 H1:p + 0.81 Your sample consists of 116 subjects, with 93 successes. Calculate...

A: Let us assume p be the population proportion of a certain characteristic. Let n is the sample size a...

Q: 66. Find the geometric mean of the follówing distribution : Values Frequency 352 48 220 10 230 8 160...

A:      Values (x) :- 352, 220, 230, 160, 190 Frequency (f) :-  48,  10,    8,     12,   15 Then,  We w...

Q: It has been claimed that 30% of students in a particular school dislike mathematics. When a survey w...

A: Given,n=600x=153p^=xnp^=153600=0.51α=0.5

Q: A random sample of 250 preschool children in a local suburb revealed that only 232 had been vaccinat...

A: Given : X=232 n=250   Note :As per guidelines only first 3 subparts have been answered if you need a...

Q: A local sports management company predicts that when the ticket Office first opens, a cashier servic...

A: Here AS PER POLICY I HAVE CALCULATED 3 subparts kindly REPOST for remaining  A local sports manageme...

Q: Estimate (i) the sales corresponding to advertising expenditure of. and (ii) the advertising expendi...

A: Here use regression line 

Q: According to the Canadian census of 2006, the median annual family income for families in Nova Scoti...

A:

Q: Suppose the lengths of human pregnancies are normally distributed with u = 266 days and o = 16 days....

A: Given,mean(μ)=266standard deviation(σ)=16

Q: A company produces two types of drills, a corded and cordless. The cord-type drill requires 3 hours ...

A:

Q: A new computer has a constant failure rate of 0.02 per day (assuming continuous use) and a constant ...

A:

Q: Example 4 If the mean of the following numbers is 17, find the value of k 12, 18, 21, k, 13

A:

Q: Find the probability that a man asked to form a two digit number out of 2, 3, 5, 7, 9 would form 79 ...

A: a) Repetition is not allowed. There are 5 numbers. Since, repetition is not allowed, first digit hav...

Q: (a)  What is the probability that there are exactly 2 defective phone batteries in the sample? (b) ...

A: Here AS PER POLICY I HAVE CALCULATED 3 SUBPARTS 

Q: In an experiment, college students were given either four quarters or a $1 bill and they could eithe...

A: The two by two contingency table (also called fourfold contingency table) represents two classificat...

Q: A researcher wants to find out if there is a relationship between the heights of the sons and the he...

A:

Q: marker. Based on previous evidence, you believe approximately p* = genetic marker. You would like to...

A: Given:Population Proportion, p =  0.17Confidence, C = 90% = 0.90Margin Of Error, E = 4% = 0.04

Q: Supposed that 10000 tickets are sold in one lottery and 5000 were sold in the next. If a person own ...

A:

Q: Find the critical value zα/2 that corresponds to the given confidence level.   81​%

A: Solution-: Given: c=0.81 We find the critical value, Zα/2=?

Q: The following figure is a probability density curve that represents the grade point averages (GPA) o...

A: In question, We have given a probability density curve of a GPA of graduating seniors at a large Uni...

Q: 14. The formula for Chi Square (x) is: x = chi squared x² = 0 - E)? O = observed value E; E = expect...

A: Given that, put 270 corn kernels, 90 rice grains, 90 mongo seeds and 30 squash seeds into a containe...

Q: American Airlines' flights from Boston to Dallas are on time 90 % of the time. Suppose 8 flights are...

A:

Q: If you run a correlation between two variables that are typically associated, such as sleep and psyc...

A: Correlation is the degree or extent of linear relationship between two variables.

Q: Find the values of t for which the area on the right tail of the t-distribution is 0.05 and the numb...

A: We have to find the values of t such that P(tn > t) = 0.05 for n = 15, 28, 100

Q: The prediction interval for Xn+1 will always be longer than the confidence interval for u

A: Prediction interval : A prediction interval is a set of values within which a response is anticipate...

Q: Refer to the data set 3.94, 1.47, 2.06, 2.36, 3.74, 3.43, 3.78. Find the 2nd decile. B. 2.06 C. 2....

A: Arrange the given data in ascending order1.47 , 2.06 , 2.36, 3.43 , 3.74 , 3.78 , 3.94sample size (n...

Q: (ах + bx? + сх + d dx . (ax' 2 Eхample 34.

A:

Q: Example . Calculate Bowley's coefficient of skewness from the following data : Sales No. of Companie...

A: Given data is  Sales No. of companies Below 50 8 Below 60 20 Below 70 40 Below 80 65 Be...

Q: (c) In a month where the price of eggs is above average, would you expect the price of milk to be ab...

A: Here take X = dozen eggs Y = gallons of milk

Q: If a school district takes a random sample of 80 Math SAT scores and finds that the average is 497, ...

A:

Q: ) Let X, X2, ..., X, be a random sample from the N(0, o)-distribution, and suppose that the prior di...

A:

Q: Government funding: The following table presents the budget (in millions of dollars) for selected or...

A: Solution-: We find the the least square regression line for predicting the 2012 budget from the 2006...

Q: Determine whether the correlation coefficient is an appropriate summary for the scatterplot and expl...

A: Here use given scatter plot to interpret the correlation 

Q: ) Consider the model y, = B, + B,x, + B,x + €,. for Isisn, where x,, .. . , are given values, with x...

A:

Q: Assume the random variable Xhas a binomial distribution with the given probability of obtaining a su...

A: given,X~binomial(n,p)where  no of trials(n)=5   and probability of success(p)=0.6find , P(X≤1)=?we k...

Q: the mean age of 20 youth volunteers in a community project is 17.5 years with a standard deviation o...

A: Given,sample size(n)=20sample mean(x¯)=17.5standard deviation(S)=2degrees of freedom(df)=n-1df=20-1=...

Q: Use the TI-84 calculator to find the z-scores that bound the middle 92% of the area under the standa...

A: The middle area is 0.92.

Q: voters who either voted for Candidate A ("X, = l") or for Candidate B ("X; = 0"). Denote the probabi...

A: A random sample of x1,x2,...xn voters were there voting for 2 candidates A and B Hypothesis : The Pr...

Q: Find the probability that a student participates in less than three activities

A: Here given probability distribution of x X = no of activities students take part

Q: A random sample of 100,000 credit sales in a department store showed an average sale of $87.25. From...

A: Given,sample size(n)=100,000population standard deviation(σ)=$20.00mean(x¯)=$87.25

Q: (Hypothesis testing for significance of regression coefficients] The esti- mated slope coefficients ...

A:

Q: 6E.23 cise 6.65 de Oxide ness Wafer Thickness 16 58.4 17 51.0 18 41.2 19 47.1 20 45.7

A: *Answer:  *  

Q: Example 62. The following table gives the weight (in Kg) of 60 students. Find.the value of Mode grap...

A: The given table is Class Frequency (f) 29.5 - 34.5 3 34.5 - 39.5 5 39.5 - 44.5 12 44.5 - ...

Q: Use the data shown above to construct a 96% confidence interval estimate for the mean amount of cold...

A: Here given 20 sample data Calculate sample statistics and then interval Here use t distribution Tabl...

Q: 0.2340 4 19 0.9823 5 0.0177 1.0000 Total = 282 What is the relative frequency of direct hits that we...

A: We have given that the relative frequency table represents hurricanes that have made direct hits on ...