# A survey of recent first-time home buyers found that 45% of them plan to upgrade to a bigger house within 5 years. You randomly select 30 recent first-time home buyers and ask them whether they plan to upgrade to a bigger home within 5 years. Use the normal approximation and the mean and standard deviation you found above to find the probability that more than 20 of the recent first-time home buyers plan to upgrade to a bigger home within 5 years. Leave your answer as a decimal with 4 decimal places.

destinyleisantos   ·   09.04.2020 19:42
26.06.2019 08:30
26.06.2019 01:20

step-by-step explanation:

this is not a question

23.06.2019 04:20
The vertex of the quadratic function is (1.5, -.75)
01.07.2021 16:05
Plants grow biger by sunlight and shade and water
01.07.2021 16:05

Step-by-step explanation:

# prior

mu0 <- 5

k0 <- 1

s20 <- 4

nu0 <- 2

dat <- list()

n <- sapply(dat, length)

ybar <- sapply(dat, mean)

s2 <- sapply(dat, var)

# posterior

kn <- k0 + n

nun <- nu0 + n

mun <- (k0 * mu0 + n * ybar)/kn

s2n <- (nu0 * s20 + (n - 1) * s2 + k0 * n * (ybar - mu0)^2/kn)/nun

# produce a posterior sample for the parameters

s.postsample <- s2.postsample <- theta.postsample <- matrix(0, 10000, 3, dimnames = list(NULL,

c("school1", "school2", "school3")))

for (i in c(1, 2, 3)) {

s2.postsample[, i] <- 1/rgamma(10000, nun[i]/2, s2n[i] * nun[i]/2)

s.postsample[, i] <- sqrt(s2.postsample[, i])

theta.postsample[, i] <- rnorm(10000, mun[i], s.postsample[, i]/sqrt(kn[i]))

}

# posterior mean and 95% CI for Thetas (the means)

colMeans(theta.postsample)

## school1 school2 school3

##   9.294   6.943   7.814

apply(theta.postsample, 2, function(x) {

quantile(x, c(0.025, 0.975))

})

##       school1 school2 school3

## 2.5%    7.769   5.163   6.152

## 97.5%  10.834   8.719   9.443

# posterior mean and 95% CI for the Standard Deviations

colMeans(s.postsample)

## school1 school2 school3

##   3.904   4.397   3.757

apply(s.postsample, 2, function(x) {

quantile(x, c(0.025, 0.975))

})

##            school1 school2 school3

## 2.5%    2.992   3.349   2.800

## 97.5%   5.136   5.871   5.139

01.07.2021 16:05

Q.1 word connotation means none of the above, here is the definiton of word connotation: ''A connotation is a commonly understood cultural or emotional association that some word or phrase carries, in addition to its explicit or literal meaning, which is its denotation. A connotation is frequently described as either positive or negative, with regard to its pleasing or displeasing emotional connection.''

Q.2 Energetic

Q.3 should be BOLD

Q.4 This phrase emphasizes how embarrassed Jessica feels.

Q.5 option C.

Q.6 option B.

Q.7 option C.

Q.8 option A

jesus i better get brainliest for this, also u should more points when putting multiple questions. Anywho i hope i helped.

Explanation:

01.07.2021 16:05

Q.1 word connotation means none of the above, here is the definiton of word connotation: ''A connotation is a commonly understood cultural or emotional association that some word or phrase carries, in addition to its explicit or literal meaning, which is its denotation. A connotation is frequently described as either positive or negative, with regard to its pleasing or displeasing emotional connection.''

Q.2 Energetic

Q.3 should be BOLD

Q.4 This phrase emphasizes how embarrassed Jessica feels.

Q.5 option C.

Q.6 option B.

Q.7 option C.

Q.8 option A

jesus i better get brainliest for this, also u should more points when putting multiple questions. Anywho i hope i helped.

01.07.2021 16:05

He gets less buying the two big bags

Step-by-step explanation:

01.07.2021 16:05

3 bag is better

Step-by-step explanation:

01.07.2021 16:05

-4

Step-by-step explanation:

-4 would be larger than -5 because negative numbers get smaller the farther they are from zero.

01.07.2021 16:05
6.6. ans. is 2
21. and is
01.07.2021 16:05
51/12 is the smallest
01.07.2021 16:05
1/3 is the biggest, 1/4 is the 2nd biggest,  and 5/12 is the smallest.

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