We Wish to See If the Electronic Control Indicating the Oven

question 84

Multiple Choice

We wish to see if the electronic control indicating the oven temperature for a certain model oven is properly calibrated.Four ovens of this model are selected at random.The electronic control on each is set to 300°F;after 1 hour,the actual temperature of each is measured.The temperatures measured are 305°F,310°F,300°F,and 305°F.Assume that the distribution of the actual temperatures for this model when the electronic control is set to 300°F is Normal.To test if the electronic control is properly calibrated,we will test the following hypotheses: H₀:  = 300 versus H_a:   300.Are the data statistically significant at the 5% significance level?

• A)Yes,because the P-value is less than 0.05.
• B)Yes,because the sample mean = 305°F,which is much higher than 300°F.
• C)No,because a difference of 5°F (between and  )as compared with 300°F is very small (insignificant).
• D)No,because the P-value is greater than 0.05.

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Definitions:

Growth Hormone

A hormone secreted by the anterior pituitary gland that stimulates growth, cell reproduction, and cell regeneration.

Gigantism

A condition characterized by excessive growth and height significantly above average, due to an overproduction of growth hormone in childhood.

Antidiuretic Hormone

A hormone released by the pituitary gland that regulates water balance by reducing urine production and increasing water reabsorption by the kidneys.

Posterior Pituitary

The rear portion of the pituitary gland, responsible for the storage and release of antidiuretic hormone (ADH) and oxytocin, which play roles in water balance and childbirth respectively.