Which of the following are true based on the 95% confidence interval constructed in the previous problem? We are 95% confident that the population mean for corn seedlings grown in the light/dark photoperiod is larger than that for corn seedlings grown in the dark. We are 95% confident that the sample mean difference in the concentration of soluble ferulic acid between corn seedlings grown in a light/dark photoperiod and corn seedlings grown in the dark is between -29.9 and -12.5 nmol acid per gm tissue. O We are 95% confident that the population mean difference in the concentration of soluble ferulic acid between corn seedlings grown in the dark and corn seedlings grown in a light/dark photoperiod is between -29.9 and -12.5 nmol acid per gm tissue. We are 95% confident that the population mean concentration of soluble ferulic acid between corn seedlings grown in a light/dark photoperiod is at least 12.5 and at most 29.9 nmol acid per gm tissue greater than corn seedlings grown in the dark.

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Ferulic acid is a compound that may play a role in disease resistance in corn.. A botanist measured the
concentration of soluble ferulic acid (nmol acid per gm tissue) in corn seedlings grown in the dark or in a
light/dark photoperiod. The data are shown in the table below:
Sample 1: Dark
92
117
88
91
107
109
100
101
87
87
Sample 2:
Photoperiod
111
127
104
115
129
124
123
121
120
117
Transcribed Image Text:Ferulic acid is a compound that may play a role in disease resistance in corn.. A botanist measured the concentration of soluble ferulic acid (nmol acid per gm tissue) in corn seedlings grown in the dark or in a light/dark photoperiod. The data are shown in the table below: Sample 1: Dark 92 117 88 91 107 109 100 101 87 87 Sample 2: Photoperiod 111 127 104 115 129 124 123 121 120 117
Which of the following are true based on the 95% confidence interval constructed in the previous problem?
We are 95% confident that the population mean for corn seedlings grown in the light/dark photoperiod is
larger than that for corn seedlings grown in the dark.
We are 95% confident that the sample mean difference in the concentration of soluble ferulic acid between
corn seedlings grown in a light/dark photoperiod and corn seedlings grown in the dark is between -29.9 and
-12.5 nmol acid per gm tissue.
We are 95% confident that the population mean difference in the concentration of soluble ferulic acid between
corn seedlings grown in the dark and corn seedlings grown in a light/dark photoperiod is between -29.9 and
-12.5 nmol acid per gm tissue.
We are 95% confident that the population mean concentration of soluble ferulic acid between corn seedlings
grown in a light/dark photoperiod is at least 12.5 and at most 29.9 nmol acid per gm tissue greater than corn
seedlings grown in the dark.
Transcribed Image Text:Which of the following are true based on the 95% confidence interval constructed in the previous problem? We are 95% confident that the population mean for corn seedlings grown in the light/dark photoperiod is larger than that for corn seedlings grown in the dark. We are 95% confident that the sample mean difference in the concentration of soluble ferulic acid between corn seedlings grown in a light/dark photoperiod and corn seedlings grown in the dark is between -29.9 and -12.5 nmol acid per gm tissue. We are 95% confident that the population mean difference in the concentration of soluble ferulic acid between corn seedlings grown in the dark and corn seedlings grown in a light/dark photoperiod is between -29.9 and -12.5 nmol acid per gm tissue. We are 95% confident that the population mean concentration of soluble ferulic acid between corn seedlings grown in a light/dark photoperiod is at least 12.5 and at most 29.9 nmol acid per gm tissue greater than corn seedlings grown in the dark.
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