PROBLE M A lumber company is making boards that are 2558.0 millimeters tall. If

Question

PROBLE M A lumber company is making boards that are 2558.0 millimeters tall. If the boards are too long they must be trimmed, and if they are too short they cannot be used. A sample of 13 boards is made, and it is found that they have a mean of 2556.8 millimeters with a standard deviation of 16.0. Is there evidence at the 0.05 level that the boards are too short and unusable? Assume the population distribution is approximately normal. HYPOTHESES Enter the hypotheses Ho 0" KEYPAD 38 mins Test Status

Explanation / Answer

One tail test:

Null: > 2558

Alt: < 2558

A null hypothesis is a hypothesis that says there is no statistical significance between the two variables. It is usually the hypothesis a researcher or experimenter will try to disprove or discredit. Analternative hypothesis is one that states there is a statistically significant relationship between two variables.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.