Question

The FDA has established that the concentration of a pesticide in apples may not exceed 10 parts per billion (ppb). A random sample of 25 apples from a major orchard had an average pesticide content of 9.9 ppb, with a standard deviation of 0.5 ppb. The calculated t-statistic is 1, with an associated P-value for the one-tailed test of 0.164.

The mean concentration of a pesticide of the samples=

Tries 0/2 |

The standard deviation is =

Tries 0/2 |

The sample size, n, is =

The t-statistic is =

a.)|9.9-10|/0.5.

b.)|9.9-10|/ (0.5/25).

c.)|9.9|/0.5.

d.)|9.9-10|/(0.5/5)

What is the null hypothesis?

a.)The population mean of concentration of a pesticide in apples is
equal to or less than 10 ppb.

b.)The sample mean of concentration of a pesticide in apples is
equal to or greater than 10 ppb.

c.)The population mean of concentration of a pesticide in apples is
equal to or greater than 10 ppb.

d.)The sample mean of concentration of a pesticide in apples is
equal to or less than 10 ppb.

Incorrect. | Tries 1/2 | Previous Tries |

Answer #1

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