Use the Tornadoes data. Your TASK is to use the months of July and August to predict the tornado activity in October. Answer questions 5 to 7. Choose the best fitting answer. Note: numbers are truncated unless specified.
5. If July had 100 tornadoes and August had 200 tornadoes, what would be your prediction for the number of tornadoes in October?
6. What is the approximate error of this prediction?
7. The intercept here has a value of 5.17. What is the STATISTICAL interpretation of this number?
Tornadoes and Deaths by Year and Month (1950-1994)
Year Total Tornadoes Tornadoes by Month Total Deaths Deaths by Month
Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec
1950 201 7 20 21 15 61 28 23 13 3 2 4 4 70 1 45 1 12 2 6 0 0 0 0 0 3
1951 260 2 10 6 26 57 76 23 27 9 2 12 10 34 0 1 0 2 7 9 5 0 8 0 1 1
1952 240 12 27 43 37 34 34 27 16 1 0 6 3 230 0 10 209 4 2 2 2 1 0 0 0 0
1953 422 14 16 40 47 94 111 32 24 5 6 12 21 519 0 3 24 36 163 244 0 0 0 0 0 49
1954 550 2 17 62 113 101 107 45 49 21 14 2 17 36 0 2 10 2 9 5 0 1 3 2 0 2
1955 593 3 4 43 99 148 153 49 33 15 23 20 3 129 0 0 5 7 106 2 5 0 2 1 1 0
1956 504 2 47 31 85 79 65 92 42 16 29 7 9 83 0 8 1 67 4 0 1 2 0 0 0 0
1957 858 17 5 38 216 228 147 55 20 17 18 59 38 193 13 0 1 30 87 14 0 0 2 2 25 19
1958 564 11 20 15 76 68 128 121 46 24 9 45 1 67 0 13 0 4 0 43 1 1 1 4 0 0
1959 604 16 20 43 30 226 73 63 38 58 24 11 2 58 3 21 9 1 8 2 0 0 14 0 0 0
1960 616 9 28 28 70 201 125 42 48 21 18 25 1 46 0 0 0 7 34 3 0 1 0 1 0 0
1961 697 1 31 124 74 137 107 77 27 53 14 36 16 52 0 0 7 4 23 2 0 0 15 0 1 0
1962 657 12 25 37 41 200 171 78 51 24 11 5 2 30 1 0 17 2 4 0 0 6 0 0 0 0
1963 463 15 6 48 84 71 90 62 26 33 13 15 0 31 1 0 8 16 1 0 0 2 3 0 0 0
1964 704 14 2 36 157 134 137 63 79 25 22 17 18 73 10 0 6 15 16 0 0 2 0 22 0 2
1965 897 21 32 34 123 273 147 85 61 64 16 34 7 301 0 0 2 268 17 7 0 1 0 1 5 0
1966 585 1 28 12 80 98 126 100 58 22 29 20 11 98 0 0 58 12 0 19 3 0 0 6 0 0
1967 926 39 8 42 149 116 210 90 28 139 36 8 61 114 7 0 3 73 3 6 1 2 5 4 0 10
1968 660 5 7 28 102 145 136 56 66 25 14 44 32 131 0 0 0 40 72 11 2 2 0 0 3 1
1969 608 3 5 8 68 145 137 98 70 20 26 5 23 66 32 0 1 2 4 7 0 19 0 0 0 1
1970 654 9 16 25 117 88 134 82 55 54 50 10 14 73 0 0 2 30 26 6 3 0 0 6 0 0
1971 889 19 83 40 75 166 199 100 50 47 38 16 56 159 1 134 2 11 7 1 1 0 0 0 0 2
1972 741 33 7 69 96 140 114 115 59 49 34 17 8 27 5 0 0 16 0 2 0 2 0 0 2 0
1973 1102 33 10 80 150 250 224 80 51 69 25 81 49 89 1 0 17 10 35 3 1 4 3 0 12 3
1974 945 24 23 36 267 144 194 59 107 25 45 13 8 366 2 0 1 317 10 31 0 0 0 5 0 0
1975 919 52 45 84 108 188 196 79 60 34 12 39 22 60 12 7 12 13 5 6 2 2 0 0 0 1
1976 834 12 36 180 113 155 169 84 38 35 11 0 1 44 0 5 21 1 8 3 2 1 3 0 0 0
1977 852 5 17 64 88 228 132 99 82 65 25 24 23 43 0 2 0 26 4 0 1 6 1 1 0 2
1978 789 23 7 17 107 213 148 143 65 20 7 9 30 53 2 0 0 4 7 17 11 1 6 0 0 5
1979 855 16 4 53 123 112 150 132 126 69 47 21 2 84 0 0 1 58 2 8 1 5 2 7 0 0
1980 866 5 11 41 137 203 217 95 73 37 43 3 1 28 0 0 2 4 8 7 5 0 1 1 0 0
1981 782 2 25 33 84 187 223 98 64 26 32 7 1 24 0 2 1 13 0 8 0 0 0 0 0 0
1982 1047 18 3 60 150 329 196 95 34 38 9 19 96 64 1 0 6 30 14 4 0 0 2 0 0 7
1983 931 13 41 71 65 249 178 99 76 19 13 49 58 34 2 1 0 6 14 2 4 0 0 0 0 5
1984 907 1 27 73 176 169 242 72 47 17 49 30 4 122 0 0 64 33 6 14 0 0 0 4 1 0
1985 684 2 7 38 134 182 82 51 108 40 18 19 3 94 0 0 2 5 78 3 0 3 0 0 3 0
1986 765 0 30 76 84 173 134 88 67 65 26 17 5 15 0 2 6 2 1 0 3 1 0 0 0 0
1987 656 6 19 38 20 126 132 163 63 19 1 55 14 59 0 6 1 1 31 2 0 1 0 0 11 6
1988 702 17 4 28 58 132 63 103 61 76 19 121 20 32 5 0 1 4 3 0 0 3 1 0 14 1
1989 856 14 18 43 82 231 252 59 36 31 30 57 3 50 0 0 1 0 9 5 0 0 0 4 31 0
1990 1133 11 57 86 108 243 329 106 60 45 35 18 35 53 0 1 3 0 5 11 0 29 0 2 0 2
1991 1132 29 11 157 204 335 216 64 46 26 21 20 3 39 1 0 13 21 0 1 1 0 0 0 2 0
1992 1297 15 29 55 53 137 399 213 115 81 34 146 20 39 0 0 5 0 0 1 0 3 0 4 26 0
1993 1173 17 34 48 85 177 313 242 112 65 55 19 6 33 0 3 5 10 2 1 0 6 2 4 0 0
1994 1082 13 9 58 205 161 234 155 120 30 51 42 4 69 0 0 40 12 0 3 3 4 0 0 7 0In: Statistics and Probability
|
1. Choose the best match. Each of the answer can only be used once! |
||||||||||||||||||
|
In: Biology
7-5. A new barcode reading device has an installed cost basis of $24,750 and an estimated service life of seven years. It will have a zero salvage value at that time. The 200% declining balance method is used to depreciate this asset. a. What will the depreciation charge be in year seven? b. What is the book value at the end of year six? c. What is the gain (or loss) on the disposal of the device if it is sold for $800 after six years?
In: Accounting
In: Statistics and Probability
The table below represents data on a variable of interest collected from two independent groups, in which each group was randomly assigned 10 participants. A researcher is interested in testing whether the two groups have different means.
Group 1 = 4, 4, 2, 6, 3, 5, 6, 1, 5, 4
Group 2 = 6, 10, 4, 7, 8, 5, 9, 10, 6, 7
Please bold answers and show work
a) What are the appropriate hypothesis for this analysis?
b) What is/are the critical value(s) for this tests at a 0.05 alpha level?
c) what is the estimated standard error for this test?
d) What is the observed value of the appropriate test statistic?
e) What is your decision regarding the stated hypothesis?
In: Statistics and Probability
4) Se cotizó el precio (en dólares) de varios productos
similares en el Mercado,
para comparar si existe variación en los precios de dos marcas
diferentes A y
B, los datos obtenidos fueron:
Precio Marca A Marca B
10 12 30
30 25 25
50 18 8
70 10 5
90 35 2
Total 100 70
a) Calcule el precio promedio de ambas Marcas. (2 puntos)
b) Cuál de las dos Marcas prese nta mayor variación de precios?
(hallar el rango
y desviación estándar) (3 puntos)
The price (in dollars) of several similar products was quoted in the Market, to compare if there is variation in the prices of two different brands A and B, the data obtained were:
Price Brand A Brand B
10 12 30
30 25 25
50 18 8
70 10 5
90 35 2
Total 100 70
a) Calculate the average price of both brands. (2 points)
b) Which of the two brands has the greatest price variation? (find
the range and standard deviation) (3 points)
In: Statistics and Probability
a) Calculate the size of the monthly payments.
b) Construct an amortization table.
c) Calculate the outstanding balance after three payments.
Amortization Table
|
Payment Number |
Amount Paid |
Interest Paid |
Principal Repaid |
Outstanding Principal Balance |
|
0 |
||||
|
1 |
||||
|
2 |
||||
|
3 |
||||
|
4 |
||||
|
5 |
||||
|
6 |
||||
|
7 |
||||
|
8 |
a) Calculate the interest included in the 20th payment.
b) Calculate the principal repaid in the 36th payment.
c) Construct a partial amortization schedule showing the details of the first two payments, the 20th payment, the 36th payment, and the last two payments.
d) Calculate the totals of amount paid, interest paid, and the principal repaid.
|
Payment Number |
Amount Paid |
Interest Paid |
Principal Repaid |
Outstanding Principal Balance |
|
0 |
$12 000.00 |
|||
|
1 |
||||
|
2 |
||||
|
19 |
||||
|
20 |
||||
|
35 |
||||
|
36 |
||||
a) What is the size of the monthly payments?
b) How much interest is paid during the first year?
c) How much of the principal is repaid during the first five-year term?
a) Compute the size of the monthly payment.
b) Determine the balance at the end of the four-year term.
c) If the mortgage is renewed for a five-year term at 8.66% compounded semi-annually, what is the size of the monthly payment for the renewal term?
In: Accounting
Periodic interest rates. You have a savings account in which you leave the funds for one year without adding to or withdrawing from the account. Which would you rather have: a daily compounded rate of 0.055%, a weekly compounded rate of 0.355%, a monthly compounded rate of 1.45%, a quarterly compounded rater of 4.50%, a semiannually compounded rate of 7%, or an annually compounded rate of 15%?
What is the effective annual rate (EAR) of a daily compounded rate of 0.055%?
_________% (Round to two decimal places.)
What is the EAR of a weekly compounded rate of 0.355%?
__________% (Round to two decimal places.)
What is the EAR of a monthly compounded rate of 1.45%?
__________% (Round to two decimal places.)
What is the EAR of a quarterly compounded rate of 4.50%?
__________% (Round to two decimal places.)
What is the EAR of a semiannually compounded rate of 7%?
___________% (Round to two decimal places.)
What is the EAR of an annually compounded rate of 15%?
___________% (Round to two decimal places.)
Which periodic rate would you rather have for your savings account? (Select the best response.)
A. Upper A quarterly compounded rate of 4.50%.
B. Upper A monthly compounded rate of 1.45%.
C. An annually compounded rate of 15%.
D. Upper A daily compounded rate of 0.055%.
E. Upper A weekly compounded rate of 0.355%.
F. Upper A semiannually compounded rate of 7%.
In: Finance
7. Using the NY Times AND one other newspaper, such as your local newspaper or USA Today, find two newspaper articles reporting the results of an opinion poll. • What information do the articles provide on the sample that was selected? • What additional information do you need to determine whether the sample was a representative one?
In: Statistics and Probability
Human Resource Management researchers examined the impact of environment on employee development. Employees were randomly assigned one of the following four workplace types/conditions: Impoverished (isolated cubicles each with bare minimum equipment - chair, desk & computer), standard (cubicles placed hear each other, equipped with a 'normal level' of office equipment - printer, shelves, manuals, stationery, etc.), enriched (standard cubicles plus regular work-related meetings), super enriched (enriched environment plus regular non-work-related social events).
Employees were also categorized by function they performed for the company (engineering, sales, manufacturing, etc.), because it's possible that functional background may have been a bigger association with test score than working condition.
After two months, the employees were tested on a variety of work-relevant learning measures. Use the Microsoft Excel "Anova: Two-Factor Without Replication" Data Analysis tool to conduct a 2-way ANOVA test for the data in the following table:
| Employee Function | Working Condition | |||
| Impoverished | Standard | Enriched | Super Enriched | |
| Engineering | 8 | 17 | 22 | 22 |
| Sales | 7 | 21 | 24 | 19 |
| Marketing | 15 | 10 | 15 | 21 |
| Finance & Accounting | 14 | 12 | 19 | 29 |
| Purchasing | 18 | 19 | 15 | 16 |
| Manufacturing | 12 | 11 | 14 | 4 |
In: Statistics and Probability