mara spent 1 1/2 on science homework.this is 2/3 of the time she had spent on her homework.how much time did she spend on her homework? 5/6 hours 2 1/6 hours2 1/4 hours 4/9 hours Question solved general 4 months ago 8574
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 77 and a standard deviation of 7. Complete parts (a) through (d). a. What is the probability that a student scored below 86 on this exam? The probability that a student scored below 86 is nothing. (Round to four decimal places as needed.) Question solved general 4 months ago 5174
Suppose a brand of light bulbs is normally distributed, with a mean life of 1400 hr and a standard deviation of 150 hr. Find the probability that a light bulb of that brand lasts between 1175 hr and 1610 hr. Question solved general 4 months ago 1012
What is the standard form of the equation of a circle whose diameter is 12 units and whose center is (-2,9) ? Question solved general 4 months ago 9128
please someone help me and solve this questions for me and find following limits Question solved general 4 months ago 4045
The drawing tip of a large marker is in the shape of a hemisphere. The diameter of the great circle of the hemisphere is 22millimeters. What is the volume of the drawing tip? (Use 3.14 for 7. Round the answer to the nearest tenth, if necessary. Recallthat the formula for the volume of a sphere is V = 1 )1,393.1 cubic millimeters2,786.2 cubic millimeters5,572.5 cubic millimeters8,358.7 cubic millimeters Question solved general 4 months ago 3123
4(5a²b³)^2 / (2x³y^5)4 show your workYou invest $15,000 in a savings account with an annual interest rate of 2.5% in which the interest is compounded quarterly. How much money should you expect to have in the account after 5 years? Show your work Question solved general 4 months ago 4843
Surface integrals using a parametric description. evaluate the surface integral \int \int_{s} f(x,y,z)dS using a parametric description of the surface.f(x,y,z)=x2+y2, where S is the hemisphere x2+y2+z2=36, for z>=0 Question solved general 4 months ago 6360
Consider the function, f(x) = 1 1 + x 2 . a. (10 pts) Compute Z 1 −1 f(x) dx using five point Simpson’s method (two Simpson partitions). Show all the calculations in exact arithmetic (i.e. use fractions throughout). b. (15 pts) Partition the interval [−1, 1] into 5 subintervals. For this partition, compute Z 1 −1 f(x) dx using trapezoid and midpoint methods. Show all the calculations in exact arithmetic Question solved general 4 months ago 6694
Store A uses the newsvendor model to manage its inventory. Demand for its product is normally distributed with a mean of 500 and a standard deviation of 300. What is its in-stock probability if Store A’s order quantity is 800 units? Question solved general 4 months ago 2282
A sanitation department is interested in estimating the mean amount of garbage per bin for all bins in the city. In a random sample of 40 bins, the sample mean amount was 52.8 pounds and the sample standard deviation was 3.9 pounds. Construct 95% and 99% confidence intervals for the mean amount of garbage per bin for all bins in the city.a) What is the lower limit of the 95% interval? Give your answer to three decimal places.b) What is the upper limit of the 95% interval? Give your answer to three decimal places.c) What is the lower limit of the 99% interval? Give your answer to three decimal placesd) What is the upper limit of the 99% interval? Give your answer to three decimal places.e) Consider the claim that the mean amount of garbage per bin is 54.1985 pounds. Is the following statement true or false? The decision about the claim would depend on whether we use a 95% or 99% confidence interval: True/False Question solved general 4 months ago 1820
Solve the equation for all degree solutions and if 0° ≤ θ < 360°. Do not use a calculator (Enter your answers as a comma-separated list. If there is no solution, write no solution.)1. 2 sin θ= root 2(a) all degree solutions (let k be any integer.)(b) 0≤ θ < 360°2. 2 cos θ − root 3=0(a) All degree solutions (let k be any integer.)(b) 0≤ θ < 360°3. root 3 cot θ- 1=0(a) all degree solutions (Let k be any integer.)(b) 0° ≤ θ < 360° Question solved general 4 months ago 8439
Consider the recurrence relation and some initial values for the Fibonacci sequence. Fk = Fk − 1 + Fk − 2 F0 = 1, F1 = 1, F2 = 2, Use the recurrence relation and values for F0, F1, F2, given above to compute F13 and F14. Question solved general 4 months ago 5314
A random sample of 60 suspension helmets used by motorcycle riders and automobile race-car drivers was subjected to an impact test, and on 16 of these helmets some damage was observed. (a) Find a 95% two-sided confidence interval on the true proportion of helmets of this type that would show damage from this test. Round your answers to 3 decimal places. ≤p≤ (b) Using the point estimate of p obtained from the preliminary sample of 60 helmets, how many helmets must be tested to be 95% confident that the error in estimating the true value of p is less than 0.02? n= (c) How large must the sample be if we wish to be at least 95% confident that the error in estimating p is less than 0.02, regardless of the true value of p? Question solved general 4 months ago 4924
The candy company that makes M&M's claims that 10% of the M&M's it produces is green. Suppose that the candies are packaged at random in large bags of 200 M&M's. When we randomly pick a bag of M&M's, we may assume that this represents a simple random sample of size n = 200. Suppose we wish to test H0: p = 0.10 versus Ha: p ≠ 0.10. Suppose that in the randomly selected bag of M&M's there are only 12 green M&M's. Calculate the value of the large-sample z statistic. If a 90% confidence interval were also calculated from the data, would it contain the value 0.10? Question solved general 4 months ago 5609
1. (8.3 × 10-3)(69,500) 2. (2.13 × 109)(5.6 × 10–7) 3. (4.3 × 105)(3.7 × 103) 4. (3600)(7.5 × 10–2) 5. 1.8 × 102 − 7.5 6. 5.32 × 106 − 7.6 × 10-2 7. 3.6 × 10-4 − 2.88 × 103 8. 3.92 × 10-3 − 9.8 × 10−4 9. (2.2 × 105)(2,500) 10. (9.66 × 103)(2.6 × 10-5) 11. (5.24 × 10-8)(6.9 × 103) 12. (1.1 × 104)(7.7 × 10-1) 13. 9.45 × 106 − 2.7 × 104 14. 1.8 × 10−3 − 7.5 × 10-1 15. 26,607 − 5.43 × 102 16. 3.6 × 10-1 − 4 × 107 17. (1.6 × 103) + (4.77 × 102) 18. (8.735 × 104) + (2.8 × 105) 19. (3.31 × 109) - (2.2 × 108) 20. (9.475 × 105) - (1.9 × 103) 21. (34,500) - (6.3 × 102) 22. (8.8 × 107) - (49,000) 23. (7.28 × 1010) + (1.9 × 1010) 24. (3.325 × 105) + (2.7 × 103) 25. (4500) - (3.0 × 102) 26. (7.89 × 106) - (4.5 × 106) Question solved general 4 months ago 1883
The 9th term of an arithmetic series is 5/2The sum of the 2nd term and the 5th term of this series is 27Find the sum of the first 100 terms of the series. Question solved general 4 months ago 6373
Tim Worker estimates his taxable income will be $7,000. He is paid twice a month or 24 times a year. Because Tim has only one source of income, he uses the Tax Tables to estimate how much will be deducted from his pay for withholding.1. Finds the tax rate for his income level. = %2. Enters the base amount. = $3. Enters the amount of tax owed. = $4. Divides by = $Please help and answer question using numbers 1,2,3,4Thank u will give u good rating Question solved general 4 months ago 8037
Will give BRAINLIEST for the RIGHT answerFind A4 in the geometric series in which S4=65 and the common ratio is r=2/3 Question solved general 4 months ago 7909