MATH MAT 133 5-3 Homework Assignment Solutions.
MATH MAT 133 5-3 Homework Assignment Solutions. Homework Problem 7 Find the mean (2 decimal places) and standard deviation (4 decimal places) for each binomial random variable. This is a binomial problem. n = number of trials p = probability of success (Your text uses the symbol pi instead of p) q = 1 - p which is the probability of failure. There are formulas for the mean & standard deviation. To find the mean. Multiply n•p. To find the standard deviation. Multiply n • p • q Find the square root and round off. This is the standard deviation. a) n = 42, p = .90 q = 1 – p = .10 b) n = 80, p = .70 q = 1 - .70 = .30 c) n = 32, p = .75 q = 1 - .75 = .25 Here is a video you can watch for Problem 7: Homework Problem 8 Look at textbook exercise 6.25:
Información del documento
- Subido en
- 27 de mayo de 2023
- Número de páginas
- 9
- Escrito en
- 2022/2023
- Tipo
- Examen
- Contiene
- Preguntas y respuestas
