10. The lengths of the 575 iron rods in a blacksmith's workshop are shown in the histogram below:Frequency density25201050102030Length (/cm)4050a) How many items that are between 15 and 35 cm long?b) What fraction of the items are less than 25 cm long?c) The shortest 20% of the rods are to be recycled. Calculate an estimate of the shortest item thatwill not be recycled.

Given histogram representing lengths of 575 iron rods as shown below

Answered: 10. The lengths of the 575 iron rods in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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STATE: How heavy a load (in pounds) is needed to pull apart pieces of Douglas fir 44 inches long and 1.51.5 inches square? Given are data from students doing a laboratory exercise. 33,190 31,860 32,590 26,520 33,280 32,320 33,020 32,030 30,460 32,700 23,040 30,930 32,720 33,650 32,340 24,050 30,170 31,300 28,730 31,920 To access the complete data set, click the link for your preferred software format: Excel Minitab JMP SPSS TI R Mac-TXT PC-TXT CSV CrunchIt! We are willing to regard the wood pieces prepared for the lab session as an SRS of all similar pieces of Douglas fir. Engineers also commonly assume that characteristics of materials vary Normally. Suppose that the strength of pieces of wood like these follows a Normal distribution with standard deviation 3000 pounds. PLAN: We will estimate ?μ by giving a 98% confidence interval. SOLVE: Find the sample mean ?¯ . (Enter your answer rounded to the nearest whole number.) ?¯= Give a 98% confidence…
Time left 0:4 From January to September, the mean number of car accidents per month was 630. From October to December, the mean was 1350 accidents per month. of The mean number of car accidents per month for the whole year was: a) 720 b) 675 c) 690 d) 810 e) 630
5) Which type of data is provided in the scenario given below? a.) neither accurate nor precise b.) accurate, but not precise c.) precise, but not accurate d.) precise and accurate
2. A customer at a specialty milk tea shop observed the amount of time, in minutes, that each of 20 customers spent waiting to receive an order. The results are recorded in the table below: Time (min) to receive order 3.2 4.0 3.8 2.4 4.7 5.1 4.6 3.5 3.5 6.2 3.5 4.9 4.5 5.0 2.8 3.5 2.2 3.9 5.3 Find the mean and sample standard deviation of these data. Interpret the results. 62 29 2.9
7.8km 16km SA=
8. An entrepreneur wanted to assess the quality of eggs produced by his subcontractors. He measured the weight (Y in g) of each egg in a selected pen as well as its circumference (X, in cm) to obtain the size. Define the population of the study.
The mean daily maximum temperatures at Komakuk Beach, in the Yukon, were recorded for The month from 1958 to 1990. The data are represented by the formula T=17.11sin(0.60M – 21.83)– 5.38, where Tis the temperature ("C) and Mis the number of the month in the year (1 to 12). a) What is the maximum mean daily temperature? b) What is the minimum mean daily temperature? c) What is the mean daily temperature for May? d) In a typical year, during how many months will the mean daily temperatures be higher than 0°C? Give your answer to the nearest tenth of a month.
Please answer all 4
The following data are given for a biogas digester suitable for the output of six cows. The volume of digester is 5.7 m, the volume of gas holder is 4.2 m and the retention time is 22 days. Find the height of gas holder height of gas holder = cm
Q#1: A) Accidents at a potato chip plant are categorized according to the area injured: Area Numbers Fingers 17 Eyes 5 Arm 2 Leg 1 Total=25 Draw and interpret the bar graph or pie chart. Find the proportion of the injuries occur in damaging: i. Fingers ii. Eyes B) A sample of the daily rainfall (in millimeters) was recorded as under: 3, 1, 0,0, 0, 0, 0, 2, 0, 0, 3, 0, 0, 0, 7, 1, 1, 0, 3, 8, 0, 0, 0, 32, 38,3, 0, 3, 1, 0, 0 Find the mean, median and mode rainfall of the sample data. Why the median and mode rainfalls are not the suitable averages of the daily rainfall? Explain. C) The final grades awarded by two professors in the courses of Probability & Statistics, have been carefully examined.…
5) A marine biologist records a frequency list of the lengths (L), measured to the nearest centimeter, of 100 mackerel (fish). The results are given in the following table a) Complete the table with the cumulative frequencyb) Draw the cumulative frequency diagram (use the upper limit as abscissa, use the grid) c) Find the median of the lengths of the fish. d) Calculate the interquartile range e) What percentage of the fish is longer than 39 cm? f) If it is decided to sell 20% in the local market, taking into account the smallest fish, what is the length of this group. g) The largest are sold to important Supermarkets, of which 45% are chosen, so what is the length of the fish sold? h) Estimate the standard deviation i) How many fish are two standard deviations above the mean? j) The company must pay a fine if more than 10% of the catch is less than 30 cm, calculate and decide if the company must pay such a fine
3. You are building a go-cart for the National Go-cart Championship Race. Knowing that heavier go-carts travel faster but consume more gas, you need to figure out the optimal go- cart weight. This graph shows the relationship between the weights of last year's go-carts and the amount of gas they used. Use the graph to answer questions a-d. Gas Consumption Depending on Car Weight 400 350 300 E250- 200 150 100 50 40 60 80 100 120 140 160 Car weight (kg) Gas used (ml) 20 OHayden-McNeil, LLC

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