Compute the heights of the histogram for the intervals 20 to < 24 and 24 to < 59.

Q: A student must have an average​ (the mean) on five tests that is greater than or equal to​ 80% but…

A: Let x be the range of grade in fifth test.

Q: In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to identify Egypt when…

A: Given: 95% confident interval for difference in the proportions is from 0.042 to 0.160.…

Q: The following is the data of inflation rates in th

A: Given,   Year Inflation  rate 2019       2.48% 2017      2.85% 2015     0.67% 2014…

Q: If a person spends 60 on books priced at 4 each, 60 on books priced at 5 each and 60 on books priced…

A:

Q: random sample of 25 college males was obtained and reached their actual height and what they wished…

A: a) Given CI is 0.8 and 2.2, hence the null hypothesis that can be rejected is-  H0:μd=0.5, since 0.5…

Q: Find the median k AS-LL ÜS-UL fi 1 55 61 62 68 69 75 5 4 76 82 9. 83 89 7 6. 90 96 4 3.

A: Median is given by, Here class 4th has the highest frequency (9) so class 76-82 is the modal class.…

Q: A random sample of 90 American female soccer players found that 14 play professionally abroad. Build…

A: Given that  A Random sample size (n) = 90 Players play professionally abroad (x) = 14  Confidence…

Q: 1 Find the mean value of over the interval [0,27]. 4 + COSX

A: Follow step 2 and 3.

Q: The mean and S.D. of income of 50 men are Rs. 3200 and Rs. 525 respectively The same for 40 women…

A: Formula for S.D for combined group: σ12=n1(σ12+d12)+n2(σ22+d22)n1+n2          Combined mean is,…

Q: Express the null and alternative hypotheses in symbolic form for this claim: the mean weight of…

A: It is given that the claim,” the mean weight of female dancers in a local modern dance company is…

Q: Compute for the P-value.

A: here given, Mr. Dela Cruz, a product design consultant, claims that at least 10% of all sports…

Q: Suppose X~N(102,16) and Z~N(0,1). If z = -0.71, what is it on an X scale?

A: Solution: From the given information, X follows normal distribution with mean µ=102 and standard…

Q: Suppose X~N(193,6) and Z~N(0,1). If z = -1.12, what is it on an X scale? Express your answer to two…

A: Given, X ~ N(193,6) Z ~ N (0,1) μ = 193 σ = 6       To  find, If Z = -1.12, what is it on an X…

Q: A rectangular box was designed to be built for a length of 30 cm and breadth of 20 cm. What is the…

A: The length of the box l = 30 cm The width of the box b = 20 cm

Q: Approximate x to three significant figures.

A: The given equation is lnx=2.3

Q: Does the function satisfy the hypotheses of the Mean Value Theorem on the given interval?

A: we have to check whether the mean value theorem satisfy or not for the given function

Q: Find the P-value interval for the test value.                      χ 2 = 19.222  , n = 11,…

A: The type of test is left tailed test The value of sample size is, n = 11 The value of chi square…

Q: The following data correspond to the times in minutes between 6 calls for an ambulance in Mexico…

A: Solution : Given : n= 6             x = 27, 15, 20, 32, 18, 26             μ = 20 Let ,     α = 0.05…

Q: Express the null and alternative hypotheses in symbolic form for this claim: the mean weight of…

A: Null hypothesis is the hypothesis of nullity. If μ represents the population mean weight of female…

Q: d. Develop a 95% prediction interval for y when æ = 8 (to 2 decimals).

A: R code: library(readxl)df &lt;- read_excel("C:/Users/ragha/Desktop/df.xlsx") model = lm(y~x,…

Q: The marks of the students in a class are normally distributed with mean 70 and S.D. of 5. If the…

A:

Q: Approximate x to three significant figures.

A: Given- lnx=-5 To find- The value of x and approximate it upto three decimal places.

Q: suppose that the mean time for a certain car to go from 0 to 60 miles per hour was 8.6 seconds.…

A: Introduction: Denote μ as the true mean time required by the car to accelerate from a speed of 0…

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: What proportion of Z-scores are outside the interval Z = −2.2 and Z = 2.2?  Round to 4 decimal…

A: Given that, z=-2.2 and z=2.2 we have to find out proportion of Z-scores are outside the interval Z =…

Q: Determine the intervals on

A:

Q: 8. From the following table find the number of students who obtained less than 45 marks: Marks No.…

A:

Q: The bottom two class intervals have been "hidden" (replaced by L - lower and U - upper for the…

A: As we see in given table,  The difference between two consecutive lower limit is 1.7 - 1.5 = 0.2

Q: 500 apples are taken at random from a large basket and 50 are found to be bad. Estimate the…

A:

Q: The area under the curve of a chi square distribution (19) between 0 and X, is 0.05 then X is equal…

A: It is given that, degree of freedom =19 level of significance  =0.05

Q: Consider that the relation between the cost of production, the lot of size production and the number…

A: From the given information, Y: Cost of production X1: lot of size production X2: number of labors…

Q: ing above one of the data points in th

A: mean  = 9 standard deviation = 2.5 to find P(X&gt;11)

Q: XYZ Company manufactures 40 lead IC, of lead length equivalent to 30cm +/- 2cm. The following are…

A: Given XYZ Company manufactures 40 lead IC, of lead length equivalent to 30cm +/- 2cm. The following…

Q: Suppose X- Bernoulli(0.5), Y ~ Bernoulli(0.1), independent. What is Var(X*Y)? (Four decimal places.)

A: We have given that  X~Bernoulli(0.5) and Y~Bernoulli(0.1) Variance of Bernoulli distribution is…

Q: The first four moments of a distribution about the value 4 of the variable are-1.5, 17, -30 and 108.…

A:

Q: A school committee with four members is to be chosen randomly from a group consisting of 6 men and 5…

A: Solution

Q: Approximate x to three significant figures.

A: To solve the equation: lnx=0.05. Solution: lnx=0.05 On simplifying further we get: lnx=0.05⇒x=e0.05…

Q: Any quantity that is computed from a sample is called

A: Sample :  It is subset of population

Q: that the proportion of V in favor of raising income taxes to pay down the national debt between and…

A:

Q: that the standard deviation of the distribution of times that Americans spent watching television in…

A: Given : population mean , u = 985.50 population standard deviation ,  σ = 285.20

Q: Express the null and alternative hypotheses in symbolic form for this claim: the mean weight of male…

A: We have given, The mean weight of male nurses working at a local hospital is less than 187 lbs. Note…

Q: The mean of the numbers (x₁, x2, x3,...,xn) is . x. Show that the sum of the deviations about the…

A:

Q: the data was collected on the time spent for preparation of exams by a class of statistics students…

A: Given that, largest number = 47, Smallest number = 1, number of classes = 6

Q: storical data indicates that the mean weight of s. New research seems to indicate that the mea…

A: Null hypothesis can be defined as hypothesis of no difference or equality while the alternative…

Q: The median of 2648015397is * O 5 O dont of them

A: Given data is 2,6,4,8,0,1,5,3,9,7

Q: Provide the missing class intervals and frequencies for the Total Number of Drinks in the Past Month…

A: Note:Hey there! Thanks for the question. It is true that, if this is the only available information,…

Q: Suppose the mean and standard deviation of the GPAs of all currently registered students at a…

A: Given data,Mean μ=2.70sd     σ=0.50Antionio’s z score = -0.62Beatrice’s z score = 1.28What are their…

Q: The graph to the right depicts IQ scores of​ adults, which are normally distributed with a mean of…

A: Given data,μ=100σ=15P(X&gt;x)=0.65x=?

Q: A student must have an average (the mean) on five tests that is greater than or equal to 80% but…

A:

Q: Suppose 4, and 4, are true mean stopping distances at 50 mph for cars of a certain type equipped…

A: Given data: 95% CI is given as: