calculate the The standard deviation.
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|
Age Of Passenger (In Years) |
Number Of Passengers |
X |
FX |
F |
||
|
15 -< 25 |
8 |
8 |
20 |
160 |
400 |
3200 |
|
25 -< 35 |
22 |
30 |
30 |
660 |
900 |
19800 |
|
35 -< 45 |
36 |
66 |
40 |
1440 |
1600 |
57600 |
|
45 -< 55 |
24 |
90 |
50 |
1200 |
2500 |
60000 |
|
55 -< 65 |
10 |
100 |
60 |
600 |
3600 |
36000 |
|
Total |
n=100 |
294 |
200 |
4060 |
9000 |
176600 |
calculate the The standard deviation. show all calutions and formulars
We have to find the standard deviation for the given frequency distribution.
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- botanist wants to see the effect of sound at 2 Hz frequency in a certain group of algae. From prior research was understood that (without sound stimuli the algae would be double in size every 24 hours on average: Around of experiment is conducted on n sample of algae and the average rate of growth is obtained to be X.3 times every 24 hours with standard deviation of X/10 where X is the last two digits of your student ID. (My student ID 04) a) In two sided hypothesis test, what is the appropriate Null and Alternative Hypothesis? b) In one sided hypothesis test, what is the appropriate Null and Alternative Hypothesis? c). If n=100, what is the appropriate conclusion that the botanist could take in two-sided test? d). If n=20, what is the appropriate conclusion that the botanist could take in two-sided test? e) If n=100, what is the appropriate conclusion that the botanist could take in one-sided test? f). if n=20, what is the appropriate conclusion that the botanist could take in…MAT 103-21766 online Spring 2021 Yasmin Priester &| 05/09/21 11: Test: Final Time Limit: 03:00:00 Sub This Question: 2 pts 14 of 15 (5 complete) This Test: 47 pts The following data represent the number of people aged 25 to 64 years covered by health insurance (private or government) in 2018. Approximate the mean a standard deviation for age. Age Number (millions) 25-34 35-44 45-54 55-64 22.6 35.7 35.3 25.3 (Type an integer or decimal rounded to two decimal places as needed.) (Type an integer or decimal rounded to two decimal places as needed.) Enter your answer in each of the answer boxes.1-> % Consider a value to be significantly low if its z score less than or equal to -2 or consider a value to be significantly high if its z score is greater than or equal to 2 A data set lists weights (grams) of a type of coin. Those weights have a mean of 5 24139 g and a standard deviation of 0 06577 g identify the weights that are significa significantly high Com What weights are significantly low? Select the correct answer below and fit in the answer box(es) to complete your choice OA Weights that are between B. Weights that are less than Oc. weights that are greater than i and (Round to five decimal praces as needed Use ascending order) (Round to five decimal places as needed.) (Round to five decimal places as needed)
- Male and female populations of humpback whales under 80 years old are represented by age in the table below. Complete parts (a) through (d). Question Help (a) Approximate the population mean and standard deviation of age for males = years (Round to two decimal places as needed) Age Males Females 0-9 13 10-19 10 20-29 17 12 30-39 15 18 40-49 23 24 50-59 24 21 60-69 18 18 70-79 13 13 Enter your answer in the answer box and then click Check Answer. Clear Al 5 parts remaining 12 AM 3126/2021 O Type here to search OK FS F4 F. FZ F1 88 %23 2 A2 1 Al******** ***** Over the past five years the mean age at death in the United States has been 72.5 years. In a random sample of the biographies of 25 "famous persons" who died in this period, the mean age at death was 73.5 years with the sample standard deviation of s=2.8 years. Test the hypothesis that famous people o The average live longer than the rest of a us? (a =.05)¶Ore
- Can you please just answer number 4 in excel if possible thank youes point(s) possible Workers at a certain soda drink factory collected data on the volumes (in ounces) of a simple random sample of 22 cans of the soda drink. Those volumes have a mean of 12.19 oz and a standard deviation of 0.14 oz, and they appear to be from a normally distributed population. If the workers want the filling process to work so that almost all cans have volumes between 11.98 oz and 12.70 oz, the range rule of thumb can be used to estimate that the standard deviation should be less than 0.18 oz. Use the sample data to test the claim that the population of volumes has a standard deviation less than 0.18 oz. Use a 0.05 significance level. Complete parts (a) through (d) below. b. Compute the test statistic. x²=0 (Round to three decimal places as needed.) c. Find the P-value. P-value= (Round to four decimal places as needed.) d. State the conclusion. the level of significance. There is evidence to conclude that the population Ho, because the P-value is standard deviation of…nts The level of nitrogen oxides (NOX) in the exhaust of a particular car model varies with mean 0.7 grams per mile and standard deviation 0.17 grams per mile. (a) What sample size is needed so that the standard deviation of the sampling distribution is 0.01 grams per mile? Hint You already have an equation that gives a relationship between the population standard deviation, the sampling distribution's standard deviation, and the sample size. Do a little algebra to solve that equation for the sample size. ANSWER: (b) If a larger sample is considered, the standard deviation for æ would be (NOTE: Enter "SMALLER","LARGER" or "THE SAME without the quotes.)
- The table below shows the summary statistics of the sales ($) made by company ABC in 2022. No. of month 12 134,562 135,000 48,997 95,000 185,000 90,000 Mean Median S.D Minimum Maximum Range The monthly profit should be adjusted by multiplying 0.88 then subtracting $30,000. Without calculating the profit for each month, find the new standard deviation of profit for 2022? (2 d.p.)Interval 30-39 40-49 50-59 60-69 70-79 80-89 90-99 Frequency 2 3 6. 4 11 31 33 Standard deviation = (Round to one decimal place as needed.) Consider a difference of 20% between two values of a standard deviation to be significant. How does this computed value compare with the given standard deviation, 11.1? O A. The computed value is not significantly different from the given value. B. The computed value is significantly greater than the given value. O c. The computed value is significantly less than the given value.Q life time of led follow exponential distribution with mean life of 5000 burning hours. if one such LED is selected at random from a big lot, what is the probability that it will last for 1. at least 4000 hours 2. almost 10000 hours Also state the standard deviation of the life time distribution. Given e raised to -0.8 is 0.4493 and e raised to -2 is 0.1353
